1 . Directions: This part consists of ten sentences. In each sentence, there is a mistake. You may have to change word, add a word or delete word. Mark out the mistakes and put the corrections in the blanks provided.
1. It is my honor I can attend the award ceremony. ______
2. It was proved whether twenty people had died in the air crash, including the pilot himself. ______
3. It happened what he saw the note on the door reading “we were not at home”. ______
4. It matters whom will deliver the lecture. ______
5. If a product sells well depends on its quality. ______
6. As parents say and do has a lifelong effect on their children. ______
7. No matter what happened between Mary and me is none of your business. ______
8. Anyone wants to stay in a hotel has to pay their own way. ______
9. It is pretty well understood that controls the flow of carbon dioxide in and out of the atmosphere today. ______
10. What is true that the well-known astronaut will come to our school next week. ______

2 . Directions: Complete the following subject clauses by using proper conjunctive pronouns or conjunctive adverbs.
1. It is still a mystery ________ has caused the accident.
2. ________ will be our monitor hasn't been decided yet.
3. ________ we will go for an outing tomorrow remains unknown.
4. It is known to all ________ the gun powder was first invented by the Chinese.
5. ________ fashion differs from country to country may reflect the cultural differences from one aspect.
6. ________ book I will buy depends on the price.
7. ________ comes is welcome.
8. It is still a question ________ we can start our exploration.
9. ________ of them wins the most points wins.
10. ________ we are going to deal with the problem is still under discussion.

3 . Directions: Translate the following sentences into English, using subject clauses with “it” as the formal subject.
1. 健康胜于财富这个道理是无需多说的。（go without saying）
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2. 很显然，每年出国度假的家庭的数量在稳步增长。（clear）
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3. 据报道，有大约一百人在上个月的洪水中丧生。（report）
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4. 很可惜，他还是不能独立完成任务。（pity）
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5. 无可否认，阅读经典小说给我们带来了很多乐趣。（deny）
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6. 我突然想到我把书忘在图书馆了。（occur）
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7. 他似乎不会像以前那么信任我了。（seem）
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8. 人们普遍认为，旅游能促进经济的发展。（accept）
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9. 我们得以接触最前沿的技术是很有必要的。（necessary）
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10. 一个没有合作精神的人很难在现代社会生存，这是常识。（common sense）
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4 . Directions: Rewrite the following sentences, using subject clauses.
1. What do we need? We need careful preparation.
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2. Which one of the books is the most suitable? We are not certain about it.
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3. When the new museum will be open to the public? We haven't decided yet.
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4. Who will go with us? It makes no difference.
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5. How did the accident happen? It is still not clear.
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6. Will the FIFA World Cup be held in China one day? It remains unknown.
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7. Where will the singer have her concert? It hasn't been announced.
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8. Why did the dinosaurs die out? It remains a puzzle.
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9. Light travels in straight lines. It is known to all.
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10. I happened to meet him in the book store yesterday.
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