1 . We will put off the picnic in the park until next week, ________ the weather may be better. (用适当的词填空)

2 . The book was written in 1946, since ________ education system has witnessed great changes. (用适当的词填空)

4 . The origin of facial makeup used in Peking Opera can date back to more than 1,400 years ago, ________ leading actors used to wear masks. （用适当的词填空）

5 . 他将把郊游推迟到5月1号，那时他将有空。
He will put off the picnic until May 1st, ________ he will be free.

6 . Mr. Smith owned this oil painting until the early 1990 s, ____________he gave it to his grandson.

A．which

B．when

C．where

D．who

7 . 用适当的关系代词或关系副词填空
1. The litlle girl comes from Beijing, ________ is the capital of China.
2. He will come to see me at weekends, ________ I will not be busy.
3. I still don't know the reason ________ the sports meeting has been put off.
4. Our teacher has told us the situation ________ this word can be used.
5. Is this the city ________ you will spend the summer holiday with your parents？
6. Which book is the one ________ writer has won the Nobel Prize in Literature？
7. This is the best factory ________ produces famous bikes.
8. I ________ was given three books on cooking, the first of I really enjoyed.
9. The man with ________ you shook hands just now is our project manager.
10. Lily, do you still remember the boss in ________ company we worked during the summer holiday？He is coming to see us.

8 . We will put off the picnic in the park until next week, ________ the weather may be better.

A．that	B．where
C．which	D．when

9 . I didn't become a serious climber until the fifth grade, _____ I went up to rescue a kite that was stuck in the branches of a tree.

A．when	B．where
C．which	D．why

10 . Between the two parts of the concert is an interval, ________ the audience can buy ice­cream.

A．when	B．where
C．that	D．which