WREN & MARTIN's English grammar-10 MCQs on Changing Compound Sentences into Complex Sentences
10 MCQs on Changing Compound Sentences into Complex Sentences
1. Compound sentence: "She studied hard, so she passed the examination with flying colours." Which of the following is the correct complex sentence?
- A) She studied hard and she passed the examination with flying colours.
- B) Because she studied hard, she passed the examination with flying colours.
- C) She studied hard but she passed the examination with flying colours.
- D) Studying hard, she passed the examination with flying colours.
Answer: B) Because she studied hard, she passed the examination with flying colours. (The coordinating conjunction "so" showing result is replaced by the subordinating conjunction "because" showing cause — one clause is made subordinate to the other creating a complex sentence with a main clause and a dependent clause.)
2. Compound sentence: "He was very tired, yet he continued to work until midnight without a break." Which of the following is the correct complex sentence?
- A) He was very tired and he continued to work until midnight without a break.
- B) He continued to work until midnight without a break so he was very tired.
- C) Although he was very tired, he continued to work until midnight without a break.
- D) Being very tired, he continued to work until midnight without a break.
Answer: C) Although he was very tired, he continued to work until midnight without a break. (The coordinating conjunction "yet" showing contrast is replaced by the subordinating conjunction "although" — the clause "he was very tired" becomes a subordinate concessive clause making the sentence complex.)
3. Compound sentence: "The alarm rang and she immediately jumped out of bed to get ready." Which of the following is the correct complex sentence?
- A) The alarm rang but she immediately jumped out of bed to get ready.
- B) As soon as the alarm rang, she immediately jumped out of bed to get ready.
- C) The alarm rang so she immediately jumped out of bed to get ready.
- D) She jumped out of bed to get ready and the alarm rang immediately.
Answer: B) As soon as the alarm rang, she immediately jumped out of bed to get ready. (The coordinating conjunction "and" showing immediate sequence is replaced by the subordinating conjunction "as soon as" — the clause "the alarm rang" becomes a subordinate time clause making the sentence complex.)
4. Compound sentence: "You must leave now, or you will miss the last train to the city." Which of the following is the correct complex sentence?
- A) You must leave now and you will miss the last train to the city.
- B) You must leave now but you will miss the last train to the city.
- C) If you do not leave now, you will miss the last train to the city.
- D) Leaving now, you will miss the last train to the city.
Answer: C) If you do not leave now, you will miss the last train to the city. (The coordinating conjunction "or" showing alternative consequence is replaced by the subordinating conjunction "if" — the clause "you do not leave now" becomes a subordinate conditional clause making the sentence complex.)
5. Compound sentence: "The match ended and the players walked off the field completely exhausted." Which of the following is the correct complex sentence?
- A) The match ended so the players walked off the field completely exhausted.
- B) The players walked off the field completely exhausted and the match ended.
- C) When the match ended, the players walked off the field completely exhausted.
- D) The match ended but the players walked off the field completely exhausted.
Answer: C) When the match ended, the players walked off the field completely exhausted. (The coordinating conjunction "and" showing sequence is replaced by the subordinating conjunction "when" — the clause "the match ended" becomes a subordinate time clause making the sentence complex.)
6. Compound sentence: "He did not eat anything in the morning, so he felt very weak by noon." Which of the following is the correct complex sentence?
- A) He did not eat anything in the morning and he felt very weak by noon.
- B) He felt very weak by noon and he did not eat anything in the morning.
- C) Since he did not eat anything in the morning, he felt very weak by noon.
- D) Not eating anything in the morning, and he felt very weak by noon.
Answer: C) Since he did not eat anything in the morning, he felt very weak by noon. (The coordinating conjunction "so" showing result is replaced by the subordinating conjunction "since" — the clause "he did not eat anything in the morning" becomes a subordinate causal clause making the sentence complex.)
7. Compound sentence: "She is extremely talented, yet she remains very humble and down to earth." Which of the following is the correct complex sentence?
- A) She is extremely talented so she remains very humble and down to earth.
- B) Though she is extremely talented, she remains very humble and down to earth.
- C) She is extremely talented and she remains very humble and down to earth.
- D) Being extremely talented, and she remains very humble and down to earth.
Answer: B) Though she is extremely talented, she remains very humble and down to earth. (The coordinating conjunction "yet" showing contrast is replaced by the subordinating conjunction "though" — the clause "she is extremely talented" becomes a subordinate concessive clause making the sentence complex.)
8. Compound sentence: "The child fell off the bicycle, but she got up and tried again without any hesitation." Which of the following is the correct complex sentence?
- A) The child fell off the bicycle so she got up and tried again without any hesitation.
- B) The child fell off the bicycle and she got up and tried again without any hesitation.
- C) Even though the child fell off the bicycle, she got up and tried again without any hesitation.
- D) The child fell off the bicycle when she got up and tried again without any hesitation.
Answer: C) Even though the child fell off the bicycle, she got up and tried again without any hesitation. (The coordinating conjunction "but" showing contrast is replaced by the subordinating conjunction "even though" — the clause "the child fell off the bicycle" becomes a subordinate concessive clause making the sentence complex.)
9. Compound sentence: "He saved his money carefully for years, and he was finally able to buy his dream house." Which of the following is the correct complex sentence?
- A) He saved his money carefully for years but he was finally able to buy his dream house.
- B) As he had saved his money carefully for years, he was finally able to buy his dream house.
- C) He saved his money carefully for years so he was finally able to buy his dream house.
- D) Saving his money carefully for years, and he was finally able to buy his dream house.
Answer: B) As he had saved his money carefully for years, he was finally able to buy his dream house. (The coordinating conjunction "and" is replaced by the subordinating conjunction "as" — the clause "he had saved his money carefully for years" becomes a subordinate causal clause making the sentence complex.)
10. Compound sentence: "Work hard every day, or you will not be able to achieve your goals in life." Which of the following is the correct complex sentence?
- A) Work hard every day and you will not be able to achieve your goals in life.
- B) Work hard every day but you will not be able to achieve your goals in life.
- C) Working hard every day, you will not be able to achieve your goals in life.
- D) Unless you work hard every day, you will not be able to achieve your goals in life.
Answer: D) Unless you work hard every day, you will not be able to achieve your goals in life. (The coordinating conjunction "or" showing alternative consequence is replaced by the subordinating conjunction "unless" — the clause "you work hard every day" becomes a subordinate conditional clause making the sentence complex.)
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