1 . Is this the reason ________ he refused our offer?

A．where

B．which

C．when

D．why

2 . Do you know the reason______ he refused to go to Mary’s birthday party. (用适当的词填空)

3 . The reason ________ he was late is known to us. (用适当的词填空)

4 . There are several reasons ________ we must protect our environment. (用适当的词填空)

5 . There are many reasons _______ people learn a foreign language.

A．why

B．which

C．that

D．where

7 . 单句改错
1. This is the town that she lived when she was young.
2. He explained the reason which he sold his car last month..
3. This is the best film which I have ever seen.
4. This is the village, where I visited last year.
5. The sun gives off light and warmth, that makes it possible for plants to grow.
6. His friend, that was very old, was famous for his paintings.
7. Which is known to us all, China is a great country.
8. Do you know the man which is teaching now?
9. I have read all the books which I borrowed from the library.
10. He told us the things and the people which he liked in America.

8 . 用括号内所给动词的正确形式填空或在空白处填入一个正确的关系代词/关系副词
1. The police found that the shopping mall had been broken into and a lot of valuable things__________(steal).
2. The plane __________(take) off at 10:10. That is, it is leaving in ten minutes.
3. A new library is being built now and __________(complete) next month.
4. They _________(try) every means to save the wounded soldier up to now.
5. —Can I use your phone?
—Sorry, my phone _________(use) now.
6. He bought a book the other day, ___________ author is a middle school student.
7. The reason ____________ he was late again was that he missed the first bus.
8. On the blackboard the teacher wrote a sentence, the meaning of __________I don’t understand.
9. The factory _____________ his father works is in the west of the city.
10. He is just the student _____________you want to make friends with.