4. When I came into the room, his family _______ watching TV.

A. is　　　 　 B. are　　 　　　 C. was　　 　　 D. were

3. So far, the population of China _______ over 1.3 billion.

A. are　　　 　　　　　　　　 B. is　　 　　　

C. has been　 　　　　　　　 D. have been

2. Everything _______ quite dear in this shop.

A. are　　　 　　　 B. is　　　 　 C. has　　 　　 D. have

1. Email, as well as telephones, _______ an important part in daily communication.

A. is playing　　　 　　　　　　 B. have played　　 　　　

C. are playing　　 　　　　　　 D. play

5. 夏令营为孩子们组织了大量的活动。

The ________ _______ organized a lot of ________ for the children.

Unit 3

4. 如果你填了这张表，就可以把书带出图书馆。

If you ________ _______ this ________, you can take books out of the library.

3. 在西安有许多名胜古迹等你去参观。　

There are so many ________ _______ ________ to visit in Xi’an.

2. 她在学习上取得了巨大进步。　

She ______ _______ ______ with her studies.

1. 这些年来, 许多国家已和中国建立了友好关系。

Over the years many countries ______ ______ friendships ________China.

3. These pens _______________ me fifty yuan.