9. One of the machines ________(help) workers _________(take) boxes to the truck.

8. _______ the little boy _______(study) in a foreign language school?

7. He often goes to the playground and ______(watch) them play basketball there.

6. --- Are your grandparents glad ________(see ) you?　 ---yes, of course.

5. I spend about an hour _______(do) my homework.

4.Yesterday I saw them enjoyed__________(they) in the park.

3. Joan often goes to that shop _______ (buy ) school things.

2. Her mother usually teaches her daughter _______(draw)

1. I can do it well with even less_______________(money).

20.(　 ) _____ is really hard___ them _____Mount Qomolangma.

　　　　 A. This, to, to climb　　　　 B. It, for, toclimb

　　　　 C. This, for, climbing　　　　 D. It , to, climbing