Ellipsis and Substitution Practice Test (Advanced): 45 Questions

Q1The committee approved the first proposal in January, and the board ___ the second in February.

Answer: C. approved

This sentence illustrates coordinate ellipsis. While gapping—omitting the verb entirely—is a valid strategy, if the verb is repeated, it must match the lexical verb 'approved'. The pro-verb 'did' is an auxiliary used for VP-substitution (replacing an entire verb phrase), but in formal gapping where a specific transitive action is mirrored with a new object ('the second'), repeating the lexical verb is required for clarity. 'Was' and 'has' are tense-incompatible auxiliaries here.

Q2She is an expert in medieval history, and her colleague ___ an expert in ancient philosophy.

Answer: A. is

The copula 'is' maintains grammatical parallelism and a state of being across both independent clauses. This is a case where the second 'is' could be omitted (gapping), but if included, it must match the tense and aspect of the first clause. Using 'was' or 'has been' would unnecessarily alter the temporal frame. 'Does' is a pro-verb used to replace action verbs, but it cannot substitute for the copula 'be' in a predicative structure.

Q3Identify the incorrect sentence:

Answer: B. The CEO reviewed the results, and the director did the data.

Gapping is the omission of a repeated verb in a coordinate clause (e.g., 'the director the data'). While the second sentence tries to use 'did' as a pro-verb (substitution), it is ungrammatical here. 'Did' can substitute for a whole verb phrase (e.g., '...and the director did too'), but it cannot act as a transitive substitute for 'reviewed' while simultaneously taking a new direct object ('the data'). The other options correctly apply gapping.

Q4The research team analyzed the data in June, and the production team ___ the manufacturing process in July.

Answer: A. analyzed

In formal coordination, when a new direct object ('the manufacturing process') is introduced, the lexical verb 'analyzed' must be repeated or elided entirely (gapping). The auxiliary 'did' functions as a pro-verb for an entire verb phrase, but it is not used as a transitive substitute for a specific lexical verb followed by a new object. 'Was' and 'has' are auxiliaries for the passive or perfective aspect and do not fit the simple past active requirement.

Q5The primary objective was to reduce costs, and the secondary objective ___ to increase efficiency.

Answer: D. was

The sentence requires the past tense copula 'was' to maintain temporal parallelism with the first clause ('was to reduce'). In balanced coordinate structures, changing the tense to 'will be', 'had been', or 'is' creates an inconsistent temporal reference unless the context specifically demands a shift in time. Repeating 'was' provides a clear, parallel description of two past objectives.

Q6He has published three articles this year, and his research partner ___ two.

Answer: A. has

This is a case of auxiliary-retaining ellipsis, where the auxiliary 'has' is kept while the lexical participle 'published' is elided (omitted). This is common in the present perfect tense to avoid redundant repetition. 'Did' is a pro-verb for the simple past, which contradicts the present perfect 'has published' established in the first clause. 'Is publishing' (present continuous) cannot substitute for a present perfect construction. 'Been' would incorrectly form a passive or continuous structure.

Q7Some employees prefer remote work, and others ___ office-based environments.

Answer: D. prefer

The lexical verb 'prefer' is repeated here to maintain clarity. While 'do' can function as a pro-verb to replace a full verb phrase (VP-substitution), it cannot be used as a transitive substitute when followed by a contrastive direct object ('office-based environments'). For example, one could say 'others do too' (omitting the object), but 'others do [noun]' is non-standard for 'prefer'. 'Are preferring' and 'have preferred' change the aspect unnecessarily.

Q8Our company exports high-end machinery to Europe, and our subsidiary ___ low-end tools to Asia.

Answer: A. exports

Repeating the lexical verb 'exports' is necessary for clarity when a new direct object ('low-end tools') is introduced. 'Does' cannot function as a transitive pro-form for 'exports' in this structure; pro-verbs like 'do' usually stand in for the entire predicate. 'Exported' (past) and 'has' (perfective) break the present simple tense established in the first clause, disrupting the parallel description of current activities.

Q9The first candidate performed well, and the second ___ poorly.

Answer: D. did

The pro-verb 'did' is used here for VP-substitution, replacing the verb phrase 'performed'. Unlike transitive structures where 'do' cannot take a new noun object, 'do' effectively substitutes for an intransitive verb or a verb modified by a contrastive adverb ('poorly'). This is a standard way to avoid repeating the lexical verb in the simple past. 'Was' and 'has' are incorrect because 'performed' is an action verb, not a copula or a perfective form.

Q10She reads technical manuals, and he ___ novels.

Answer: D. reads

The lexical verb 'reads' is required to maintain the transitive structure with the new object 'novels'. 'Does' cannot function as a transitive pro-verb taking a new noun object in formal English; it would typically require 'do so' or be used where the object is already elided (e.g., 'as he does'). 'Has' and 'is' are auxiliary forms that do not match the simple present active verb 'reads'.

Q11The board rejected the initial bid, and the shareholders ___ the secondary offer.

Answer: C. rejected

The lexical verb 'rejected' must be repeated or elided (gapping) to link with the new direct object 'the secondary offer'. The pro-verb 'did' cannot take a new direct object in this context; its role is to replace a complete verb phrase. 'Was' (passive/copula) and 'have' (present perfect) are grammatically and tense-incompatible with the simple past active 'rejected'.

Q12Investors focused on short-term gains, and analysts ___ on long-term sustainability.

Answer: C. focused

The lexical verb 'focused' is necessary because the pro-verb 'did' cannot easily substitute for a verb when a new, distinct prepositional phrase ('on long-term sustainability') provides the core information of the second clause. Repeating the verb ensures structural parallelism. 'Have' and 'were' are incorrect auxiliaries that do not match the simple past active voice required here.

Q13The software update fixed the vulnerability, and the patch ___ the performance issues.

Answer: B. fixed

Repetition of 'fixed' (or gapping) is required because the second clause introduces a new direct object ('the performance issues'). 'Did' is invalid as a transitive substitute here; it would only be used if the entire verb phrase were being replaced without a new object (e.g., 'The patch did, too'). 'Was' and 'has' are tense-incompatible auxiliaries for this simple past active construction.

Q14The architect designed the building, and the partner ___ the structural specifications.

Answer: B. designed

The lexical verb 'designed' must be repeated (or the clause elided entirely) because a new direct object — 'the structural specifications' — is introduced. 'Did' cannot act as a transitive pro-verb substituting for 'designed' when followed by a new object; pro-verbs like 'do' replace an entire verb phrase, not just the verb. Using 'was' or 'has' would produce an incomplete or tense-clashing construction.

Q15The project was more successful than we had initially ___.

Answer: D. expected

This sentence involves clausal ellipsis, where the complement (the infinitive clause 'it to be') is omitted after the verb 'expected'. The structure 'had initially expected' uses the past perfect to indicate an expectation held prior to the project's success. 'Been' and 'did' are grammatically incompatible with this past perfect construction, and 'had' alone is an auxiliary that requires a participle like 'expected' to complete the meaning.

Q16The current inflation rate is lower than it ___ five years ago.

Answer: C. was

Comparative ellipsis requires the auxiliary 'was' to match the copular ('be') nature of the main clause while respecting the past time marker 'five years ago'. This contrasts the current state ('is') with a past state. 'Is' fails due to the temporal clash with 'five years ago', and 'did' is an incorrect substitute because the main verb is a form of 'be', not an action verb.

Q17The new policy is as restrictive as the previous one ___.

Answer: A. was

The auxiliary 'was' is required to provide the past tense counterpart to the present tense 'is' in the main clause, referring to the state of the 'previous policy'. 'Did' cannot substitute for the copula 'be'. Using 'is' would be logically inconsistent, as it implies the 'previous' policy currently exists in the same state as the new one.

Q18The output in the second quarter was higher than ___ in the first.

Answer: D. it was

This comparative ellipsis elides the repeated adjective 'high'. The past simple 'it was' matches the tense of the main clause ('was higher') and maintains parallel structure when comparing two past time periods. 'It had been' (past perfect) is unnecessary here as there is no need to show one past event occurring before another; they are simple, concurrent past comparisons.

Q19Our findings are as significant as those ___ by the research team last year.

Answer: C. published

This sentence employs a reduced relative clause—a clause where the relative pronoun and 'be' verb are omitted—where 'those published' stands for 'those that were published'. 'Published' functions as a past participle modifying the pro-form 'those'. The option 'were' would require a full relative clause ('those that were published') to be grammatical in this position. 'Had' and 'were being' do not fit the required participial modification.

Q20The revenue growth was faster than ___ in any previous decade.

Answer: B. it was

The past simple 'it was' maintains tense consistency within the comparative structure, mirroring 'the revenue growth was'. This is a standard case of comparative ellipsis where the adjective 'fast' is elided. 'It had been' is used to show anteriority (something happening even further back), but 'it was' is the most straightforward parallel for comparing two time periods in the past.

Q21The candidates were as prepared as they ___ to be for the final round.

Answer: A. had been expected

The past perfect 'had been expected' indicates an expectation that existed prior to the candidates being prepared — it correctly marks one past state as earlier than another. 'Are expected' (present) and 'have been expected' (present perfect) create a tense mismatch with the past simple 'were'. 'Have been expecting' is an active continuous form that does not fit the passive meaning of having been the subject of others' expectations.

Q22The efficiency of this model is greater than ___ of the previous prototype.

Answer: A. that

In formal writing, 'that' is used as a singular demonstrative pro-form to substitute for a noun phrase ('the efficiency') to avoid repetition before a prepositional phrase ('of the previous prototype'). 'The one' is common in neutral speech, but 'that' is the standard for formal registers. 'Those' is plural and does not agree with the singular noun 'efficiency'.

Q23The regulations in this sector are stricter than ___ in the manufacturing industry.

Answer: A. those

The plural demonstrative pro-form 'those' is used to substitute for the plural noun 'regulations' in a formal comparative structure. This avoids repeating the noun. 'That' is singular and cannot substitute for 'regulations'. 'The ones' is a valid substitute but is generally considered less formal than 'those' in professional or academic contexts.

Q24The system's response time is much faster than ___ seen in the earlier version.

Answer: C. that

The singular pro-form 'that' substitutes for 'the economic climate' and is followed by a post-modifying participle phrase ('experienced in...'). In English, the personal pronoun 'it' cannot be used when followed by such restrictive post-modification; 'that' is required. 'Those' is plural, and 'the one' is less formal than 'that' in this context.

Q25The data from the primary study were more conclusive than ___ from the secondary study.

Answer: C. those

In formal and scientific English, 'data' is the plural of 'datum'. Consequently, the plural pro-form 'those' is used to maintain number agreement with 'data' and the plural verb 'were'. While 'data' is often treated as uncountable in informal speech, formal registers maintain the plural distinction. 'That' is singular and would be used only if 'data' were treated as a singular mass noun.

Q26The budget allocated for marketing was less than ___ for research and development.

Answer: B. that

The singular demonstrative pro-form 'that' is used to substitute for the head noun 'budget' in a formal comparison. Using 'that' instead of repeating the noun is a hallmark of sophisticated formal style. 'Those' is plural and thus incorrect. 'The one' is a common substitute in standard English but lacks the higher register of 'that' in academic contexts.

Q27The safety standards of the new plant are higher than ___ of the old facility.

Answer: B. those

The plural demonstrative 'those' is the standard formal substitute for the plural noun phrase 'the safety standards'. Using 'those' avoids clumsy repetition. 'That' is singular and does not match 'standards'. 'The ones' is a frequent substitute in spoken English but is often avoided in formal writing in favor of 'those'.

Q28The performance metrics of the project were as impressive as ___ of the pilot study.

Answer: D. those

Substitution for the plural 'performance metrics' requires the plural demonstrative pro-form 'those'. 'That' is singular and fails the agreement check. 'These' is used for proximal reference (items very close in the text), whereas 'those' is the conventional choice for distal/comparative reference when pointing back to a previously mentioned category.

Q29The current economic climate is more stable than ___ experienced in the last decade.

Answer: A. that

The singular pro-form 'that' correctly substitutes for 'the economic climate' when followed by a past participle ('experienced') acting as restrictive post-modification. The personal pronoun 'it' cannot be modified by a following phrase in this way (one cannot say 'it experienced in...'). 'Those' is plural and does not agree with the singular 'climate'.

Q30We employed both qualitative and quantitative methods; ___ for in-depth interviews, ___ for survey data.

Answer: D. the former / the latter

In formal writing, 'the former' and 'the latter' are precise anaphoric markers—referring back to words already used—to identify the first and second of two mentioned items. 'The last' is only used for lists of three or more. 'The first / the second' is acceptable, but 'the former / the latter' is the standard for high-level formal contrast.

Q31The committee reviewed the final report and the budget proposal. Given that the report was accepted and the proposal was not, ___ was accepted immediately, whereas ___ required further revision.

Answer: C. The former / the latter

'The former' refers back to 'the final report' (the first item mentioned), and 'the latter' refers back to 'the budget proposal' (the second item). This pairing is the standard method for formal contrastive anaphora. 'The one / the other' is too vague for this register, and 'the first / the second' is less common in formal summaries.

Q32Such ___ the oversight that the entire project had to be cancelled.

Answer: D. was

This sentence uses predicate fronting (subject-predicate inversion) with 'such' for rhetorical emphasis. The subject of the sentence is 'the oversight', which is singular. Therefore, the singular verb 'was' is required. 'Were' would be plural, 'is' is the wrong tense for the context ('had to be'), and 'had been' would create an unnecessary past perfect structure.

Q33The aforementioned ___ are essential for the completion of the project.

Answer: C. requirements

'The aforementioned' functions as an anaphoric adjective referring to things named earlier. The plural verb 'are' requires a plural subject, making 'requirements' the necessary choice. The forms 'requirement's' and 'requirements'' are possessives and do not fit the grammatical role of a subject in this sentence.

Q34The above-mentioned ___ were verified by the audit team.

Answer: D. discrepancies

'The above-mentioned' is an anaphoric modifier used to refer to previously stated information. Because the verb 'were' is plural, the subject must also be plural ('discrepancies'). 'Discrepancy' is singular. The options 'discrepancy's' and 'discrepancies'' are possessives and are syntactically incorrect as the subject here.

Q35We have just reviewed the latest test results together. Such findings ___ have necessitated a complete review of our methodology.

Answer: B. as these

The findings being discussed are 'the latest test results' that 'we have just reviewed... together' — a clear case of proximal reference, for which the demonstrative 'these' is required: 'such findings as these' points to the very findings just examined. 'Those' would instead point to some other, more distant set of findings, which clashes with the immediate back-reference set up by 'just reviewed... together'. 'That' and 'this' are singular and cannot agree with the plural noun 'findings'.

Q36The manager discussed the entry and exit ___ in the meeting.

Answer: A. procedures

This is an example of coordination ellipsis (specifically, noun-head ellipsis). In the phrase 'entry and exit procedures', 'procedures' serves as the head for both 'entry' and 'exit'. The plural form 'procedures' is used because the context implies a set of multiple steps or protocols. 'Propositions' is semantically wrong — 'entry and exit propositions' is not a natural collocation in any formal context. Using the singular 'procedure' or 'process' would be less common when referring to broad systems.

Q37The company monitors supply and demand ___ to adjust production levels.

Answer: B. conditions

In the phrase 'supply and demand conditions,' the noun head is elided after 'supply' ('supply conditions and demand conditions'). This form of ellipsis is standard for concise formal expression. 'Conditions' (plural) is appropriate for these economic concepts. 'Theories' and 'guesses' are not valid collocations with 'supply and demand' in an economic monitoring context. 'Condition' (singular) would be semantically narrower and grammatically less flexible in this compound.

Q38The team analyzed the input and output ___ for the entire system.

Answer: B. variables

In the coordinated phrase 'input and output variables,' the plural head noun 'variables' applies to both categories (input variables and output variables). Using the singular 'variable' would imply there is only one specific variable for each category, which is unlikely in complex system analysis. 'Theories' and 'guesses' are semantically inappropriate when describing measurable system I/O categories; 'variables' is the standard technical term.

Q39In a formal business letter, which of these is the most appropriate phrasing?

Answer: B. The former policy is obsolete; the latter is currently in effect.

'The former' and 'the latter' provide the appropriate formal register for academic or business writing. In 'The former policy is obsolete; the latter is currently in effect.', 'the latter' functions as a substantive (a word acting as a noun), making 'the latter one' in 'The former one is bad; the latter one is good.' redundant. 'The first/second' is standard in neutral speech but lacks the precision and tone required for formal business correspondence.

Q40The researchers compared the growth and decay ___ of the cells.

Answer: C. rates

This structure demonstrates coordination ellipsis where the first noun head is omitted ('growth rates and decay rates'). The plural 'rates' is used because the comparison involves two distinct, measurable phenomena. 'Opinions' and 'theories' cannot collocate with 'growth and decay' in a cellular biology context — cells do not have opinions or theories. Using the singular 'rate' would suggest growth and decay are being measured as a single combined figure, which is logically incorrect.

Q41Such ___ that the market reacted immediately.

Answer: C. was the impact

This is a formal emphatic inversion using 'such'. Here, 'such' acts as a predicative adjective moved to the front for emphasis, followed by the copula 'was' and the subject 'the impact'. The full sentence reads: 'Such was the impact that the market reacted immediately.' 'An event has' and 'events had' do not follow the 'Such + be + Subject + that' pattern required for this rhetorical effect.

Q42The aforementioned ___ are pending approval from the board.

Answer: B. contracts

The adjective 'aforementioned' refers back to items previously mentioned. The plural auxiliary 'are' necessitates a plural subject, 'contracts'. 'Contract' is singular and therefore grammatically incorrect. The possessive forms 'contract's' and 'contracts'' do not function as the subject of the sentence.

Q43Identify the incorrect sentence:

Answer: A. The former and the latter were discussed, but the middle one was ignored.

The anaphoric markers 'the former' and 'the latter' are strictly binary; they refer to the first and second of exactly two items. They cannot be used to refer to items in a list of three or more. Consequently, introducing a 'middle one' makes the use of 'former' and 'latter' logically and grammatically incorrect within this specific linguistic system.

Q44The company assessed the risk and reward ___ of the investment.

Answer: D. profiles

Through coordination ellipsis, 'risk and reward profiles' stands for 'risk profiles and reward profiles'. The plural 'profiles' is appropriate as it encompasses two distinct analytical categories. 'Guesses' and 'opinions' do not collocate with 'risk and reward' as formal financial assessment terms. 'Profile' (singular) would imply a single unified measurement, which is less precise in formal financial assessment.

Q45The project manager reviewed the budget and timeline ___.

Answer: C. constraints

In the phrase 'the budget and timeline constraints', 'constraints' acts as the plural head for both coordinated nouns via coordination ellipsis (budget constraints and timeline constraints). The plural form is necessary as it describes the multiple limitations or boundaries associated with both. 'Constraint' (singular) would fail to capture the multiple factors involved in project management.

Ellipsis and Substitution Practice Test — Advanced

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