1 . There are over 2,000 students in our school. (同义替换)

A．fewer than

B．more than

C．close to

2 . China has passed a law to ______ (保护) the Yangze River, which is the longest river in China.

3 . She __________ (享受) music when she is at home and having dinner.

4 . 九点三十分了，我该睡觉了。
At 9:30, _________ _________ for me _________ _________ to bed.

5 . Air is so important that no one can live w________ it.

6 . So far 20 students ________ (exchange) their new year gifts with each other.

7 . 这里的夜晚是很冷的。
It’s very cold here ________ ________.

8 . Lucy loves travelling. She goes h_________ every week.

9 . She is busy looking for some ________ (information) on the Internet.

10 . Mike has 2 volleyballs ________ they are in his room.

A．and

B．but

C．so

D．because