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

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

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

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

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

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

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

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

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

A．and

B．but

C．so

D．because

10 . —Who’s that girl over there?
—Julia, she is ________ student.

A．my dads’

B．my dad’s

C．my dad

D．my dads