2. Listen! Someone is coming! I can hear　 _________ clearly in the hall. (step)

1. The girl _________ recommended(推荐) this kind of watch to me. (strong)

5. If the weather is fine on Sunday, we’ll go to fly the m_________　 plane.

4. The Chinese g_________ is trying to develop poor areas, especially the western parts.

3. Whose t_________ is it to clean the black-board today?

2. It’s getting dark. Please l_________ the candle.

1. The earth is one of the p_________ that goes around the sun.

15.(　 ) -I think recycling books and paper is useful.

-______

A. I quite agree.　　　　　　 　　　　　　 B. I have no idea.

C. We shouldn’t use such things.　　 D. That’s a great idea.

14.(　 ) -Where is David?

-I think he ______ Australia.

A. has gone to　　　　 B. has been　　　　　　 C. has gone　　　　　　 D. has been to

13.(　 ) -Have you packed the camera yet?

-Yes, of course. I ______ it last night.

A. have packed　 B. was packed　 　　 C. packed　 　　　　 D. had packed