Intermediate sentence types. 45 questions on complex and compound-complex sentences.
What this test covers
- Complex Sentences
- Compound-Complex Sentences
- Punctuation Patterns
Answer the 45 questions below. Each answer is checked straight away, with an explanation. Press Submit at the end to get your score and save it to your dashboard. Answers are not kept if you leave before submitting.
All 45 questions with answers
Pick an answer for each question to see if you are right, with the explanation. Submit when you are done; you can submit before answering them all.
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Q1___ it rained, we still went for a walk.
Answer: D. Although
The sentence shows contrast between the rain and the walk. 'Although' is a subordinating conjunction used to introduce a dependent clause of concession. Coordinating conjunctions like 'But', 'Or', and 'So' are used to join independent clauses and cannot start a sentence followed by a comma and a main clause in this specific way.
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Q2We decided to stay home ___ the weather was terrible.
Answer: D. because
The sentence provides a reason for the decision. The subordinating conjunction 'because' is used to introduce a reason. 'But' and 'yet' show contrast, and 'or' indicates an alternative, none of which fit the cause-and-effect relationship here.
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Q3Identify the type of sentence: 'Although he was tired, he finished the work.'
Answer: B. Complex
A complex sentence consists of one independent clause ('he finished the work') and at least one dependent clause introduced by a subordinator ('Although he was tired'). Since there is one of each, it is a complex sentence.
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Q4Identify the incorrect sentence:
Answer: D. Because it was late we left.
When a dependent clause (starting with 'Because') begins a sentence, a comma is required before the independent clause. The error in 'Because it was late we left' is the missing comma after 'late'.
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Q5Which sentence is correct?
Answer: B. Since you are here, we can start.
When a sentence starts with a dependent clause (starting with 'Since'), a comma must separate it from the independent clause. 'Since you are here, we can start.' follows this rule. The option starting with 'Since, you are here' incorrectly places a comma after the subordinator.
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Q6Identify the type of sentence: 'She studied hard so that she would pass.'
Answer: D. Complex
This sentence contains one independent clause ('She studied hard') and one dependent clause ('so that she would pass'). The phrase 'so that' is a subordinating conjunction indicating purpose, making this a complex sentence.
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Q7___ you finish your chores, you cannot go out.
Answer: D. Unless
'Unless' introduces a negative condition, meaning 'if you do not.' It creates a dependent clause that modifies the main clause. Coordinating conjunctions like 'And', 'But', and 'So' cannot be used to start a dependent clause in this structure.
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Q8Which sentence is correct?
Answer: D. I will call you when I arrive.
In time clauses introduced by words like 'when' or 'after,' we use the present simple tense to refer to the future. Using the future tense 'will arrive' in the dependent clause is a grammatical error; it should be 'when I arrive.'
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Q9Which sentence is correct regarding the placement of 'because'?
Answer: D. I stayed home because I was sick.
In a complex sentence, when a subordinating conjunction like 'because' follows the independent clause, we do not usually use a comma. 'I stayed home because I was sick' is the standard punctuation.
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Q10Identify the type of sentence: 'Since you are here, let's start.'
Answer: B. Complex
This is a complex sentence because it contains one dependent clause ('Since you are here') and one independent clause ('let's start'). A compound sentence would require two independent clauses joined by a connecting word (like 'and', 'but', or 'so').
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Q11___ the movie was long, we enjoyed every minute of it.
Answer: D. Although
The sentence highlights a contrast between the movie's length and the enjoyment. 'Although' is the correct subordinating conjunction to show concession. 'Since' (reason) and 'If' (condition) do not fit the logic of the context.
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Q12Which sentence is correct?
Answer: C. He went to the store because he needed milk.
The error is the comma before 'because'. In standard English, a comma is not needed before a subordinating conjunction when it follows the main independent clause.
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Q13Which sentence is correct?
Answer: B. If you need help, please ask me.
This is a conditional sentence. When the 'if' clause (dependent clause) comes before the main clause, a comma is required to separate them. 'If you need help, please ask me.' is the correct punctuation.
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Q14Identify the type of sentence: 'If you need help, ask me.'
Answer: C. Complex
This is a complex sentence because it combines a dependent 'if' clause with an independent imperative clause ('ask me'). Simple sentences have only one clause, and compound sentences join two independent clauses.
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Q15Which sentence is correct?
Answer: C. I will wait here until you return.
When a dependent clause starting with 'until' follows the independent clause, no comma is needed. 'I will wait here until you return' is punctuated correctly. Adding commas around the conjunction breaks the flow incorrectly.
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Q16Identify the type of sentence: 'I wanted to go, but I couldn't because I was sick.'
Answer: B. Compound-Complex
A compound-complex sentence contains at least two independent clauses ('I wanted to go' and 'I couldn't') and at least one dependent clause ('because I was sick'). Here, 'but' joins the independent clauses, and 'because' introduces the dependent one.
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Q17Which sentence is correct?
Answer: D. I finished my report, and I submitted it because I was worried.
This sentence joins two independent clauses with the coordinating conjunction 'and,' which requires a comma. The final dependent clause ('because I was worried') follows the independent clause and does not need a comma. Thus, 'I finished my report, and I submitted it because I was worried' is correct.
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Q18Which sentence is correctly punctuated?
Answer: C. He studied for hours, and he passed, although he was nervous.
The sentence contains two independent clauses: 'He studied for hours' and 'he passed.' When joining independent clauses with a coordinating conjunction like 'and,' a comma must be placed before the conjunction. Additionally, the contrasting clause starting with 'although' requires a preceding comma.
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Q19Which sentence is correct?
Answer: B. She cooked dinner, and he cleaned because they were hungry.
The first two parts are independent clauses joined by 'and,' so a comma is needed before 'and.' The final part is a dependent clause ('because they were hungry') following the independent clause, which does not require a comma.
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Q20Identify the type of sentence: 'Although it rained, we played soccer, and we enjoyed it.'
Answer: A. Compound-Complex
This is a compound-complex sentence because it has one dependent clause ('Although it rained') and two independent clauses ('we played soccer' and 'we enjoyed it') joined by the coordinating conjunction 'and'.
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Q21Choose the correct sentence structure:
Answer: D. I was tired, so I went to bed because I had much work.
A comma is required before the coordinating conjunction 'so' because it joins two independent clauses. No comma is needed before the subordinating conjunction 'because' when it follows the main clause.
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Q22Which sentence is correctly punctuated?
Answer: D. She cooked dinner, and he washed the dishes because they were hungry.
The error is the second comma. While a comma is correct before 'and' to separate independent clauses, you should not put a comma before 'because' when it follows the main clause.
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Q23Which sentence is correct?
Answer: A. We arrived early, but the doors were locked since nobody was there.
The sentence joins two independent clauses using 'but,' which requires a comma. The reason clause starting with 'since' follows the main clause and does not need a comma. 'We arrived early, but the doors were locked since nobody was there' is correctly punctuated.
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Q24Identify the type of sentence: 'I like coffee, but my friend prefers tea because it is healthier.'
Answer: C. Compound-Complex
This sentence is compound-complex because it contains two independent clauses ('I like coffee' and 'my friend prefers tea') joined by 'but,' and one dependent clause ('because it is healthier') that provides a reason.
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Q25Choose the correct sentence structure:
Answer: B. He called me, and we talked when I was busy.
A comma is needed before 'and' because it joins two independent clauses ('He called me' and 'we talked'). The dependent clause 'when I was busy' follows the main clause, so no comma is required before 'when'.
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Q26Which sentence is correctly punctuated?
Answer: A. We arrived early, but the doors were locked since nobody was there.
The error is the comma before 'since.' While the comma before 'but' is necessary to join independent clauses, a subordinating conjunction like 'since' (meaning because) should not have a comma before it when it follows the main clause.
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Q27Which sentence is correct?
Answer: C. They laughed, and they danced, although they were exhausted.
Two rules apply here. A comma is required before the coordinating conjunction 'and' to join the two independent clauses. Additionally, the concessive conjunction 'although' introduces a contrasting clause and is typically preceded by a comma. Only 'They laughed, and they danced, although they were tired' satisfies both requirements.
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Q28Identify the type of sentence: 'Since the movie was long, we left early, and we went home.'
Answer: A. Compound-Complex
This is a compound-complex sentence because it includes one dependent clause ('Since the movie was long') and two independent clauses ('we left early' and 'we went home') joined by 'and'.
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Q29Choose the correct sentence structure:
Answer: C. She studied, but she passed, although she was nervous.
The coordinating conjunction 'but' joins two independent clauses and requires a comma before it. The concessive conjunction 'although' introduces a contrasting clause and is also preceded by a comma. 'She studied, but she passed, although she was nervous,' correctly applies both rules.
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Q30Which sentence is correct?
Answer: C. He ran fast, but he missed the bus because it was early.
A comma is needed before the coordinating conjunction 'but' because it connects two independent clauses. However, no comma is used before the subordinating conjunction 'because' when it appears at the end of the sentence.
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Q31Which sentence is correctly punctuated?
Answer: C. Since he was tired, he went to sleep.
When a sentence starts with a dependent clause (introduced by 'Since'), a comma must follow it. The error in 'Since he was tired he went to sleep' is the missing comma after 'tired'.
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Q32Which sentence is correct?
Answer: B. He went to sleep because he was tired.
In complex sentences, when the 'because' clause follows the independent clause, no comma is needed. Therefore, 'He went to sleep because he was tired' is the only correctly punctuated choice.
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Q33Which sentence is correctly punctuated?
Answer: B. I like apples, but I hate oranges.
'I like apples' and 'I hate oranges' are both independent clauses. When joined by the coordinating conjunction 'but,' a comma is required before 'but'. The error is the omission of this comma.
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Q34Identify the type of sentence: 'While I was cooking, the phone rang.'
Answer: D. Complex
This is a complex sentence because it contains a dependent clause ('While I was cooking') and an independent clause ('the phone rang'). The subordinator 'While' indicates that one event happened during the other.
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Q35Which sentence is correctly punctuated?
Answer: D. The phone rang while I was cooking.
In standard complex sentences, if the independent clause comes first, a comma is generally not used before the subordinating conjunction 'while.' The punctuation in 'The phone rang, while I was cooking' is therefore incorrect.
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Q36I want to go ___ I have work to do.
Answer: C. , but
The two parts of the sentence are independent clauses. To join them using the coordinating conjunction 'but,' you must place a comma before it.
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Q37Identify the type of sentence: 'She is smart, and she is kind.'
Answer: B. Compound
A compound sentence consists of two or more independent clauses joined by a coordinating conjunction ('and'). Since 'She is smart' and 'she is kind' are both independent clauses, this is a compound sentence.
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Q38Which sentence is correct?
Answer: A. He finished his work, and he went home.
When joining two independent clauses with 'and,' a comma is needed before the conjunction. 'He finished his work, and he went home' is the only option that uses the comma correctly.
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Q39Which sentence is correctly punctuated?
Answer: C. Although it was cold, we went outside.
A comma must be used after an introductory dependent clause (starting with 'Although'). The error is the missing comma in the original sentence 'Although it was cold we went outside'.
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Q40Which sentence is correctly punctuated?
Answer: C. We went outside, although it was cold.
When 'although' introduces a concessive clause that follows the main clause, a comma is placed before 'although' to signal the contrast: 'We went outside, although it was cold.' Placing a comma after 'although' ('We went outside although, it was cold') or inserting one in the middle of the main clause ('We went, outside although it was cold') is incorrect.
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Q41Identify the type of sentence: 'Since we are finished, let's go.'
Answer: A. Complex
This is a complex sentence because it consists of one dependent clause ('Since we are finished') and one independent clause ('let's go').
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Q42He was tired ___ however, he finished the task.
Answer: D. ;
'However' is a transition word (like 'however' or 'therefore'). When it connects two independent clauses, it must be preceded by a semicolon (;) or a period, and followed by a comma. A simple comma would result in a 'comma splice' error.
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Q43Which sentence is correctly punctuated?
Answer: A. He was late, but he finished the task.
The error is the comma after the coordinating conjunction 'but.' In this sentence structure, the comma should only appear before 'but' to separate the two independent clauses.
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Q44Which sentence is correctly punctuated?
Answer: A. She worked hard, but she failed the exam.
The sentence consists of two independent clauses joined by 'but.' A comma is required before the conjunction. The original sentence 'She worked hard but she failed the exam' is an error because it lacks that comma.
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Q45Identify the type of sentence: 'Although it rained, we played soccer.'
Answer: B. Complex
This is a complex sentence because it features one dependent clause ('Although it rained') and one independent clause ('we played soccer').
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