根据句意用恰当的短语完成句子

1. If you want to catch that train we'd better____ for    the station at once.    

2. Be careful not____ the ladder.    

3. I can't promise, but I____.    

4. Mr. Smith needs more exercises____.

5. Mike has only driven to the pub         his new car-he usually walks !

6. He_______ what he had done.

7. She's a bravely player; she never _______,          

8. He_______ his success more_______ luck than to ability.

9. My friend has gone to another city, but we usually ________.

10. I_______ catch the early train, but I didn't get up in

石油产品中的石油化工产品是有机合成工业的重要基本原料或中间体，有的可以直接使用。