题目

题型：期中题难度：来源：

用所给词的适当形式填空。1. If you work hard, you will be ___________(success).
2. Those workers spent ten months _____________(build) that bridge.
3. They often find it difficult ___________(learn ) English.
4. Pollution is one of the most serious _______ in the world (problem).
5. I had enough time_______(work) out that math problem.
6. The doctor told me to give up _______ (smoke).
7. I want _______(play) the piano in the evening.
8. We should stop_______(throw) about in public.
9. The knife _______(use) to cut things.
10. I think English is very _______(help) to know about the world.

答案

1. successful       2. building        3. to learn       4. problems      5. to work        
6. smoking          7. to play          8. throwing     9. is used        10. helpful