1．　 原因：晚上学习太晚，不吃早餐可多睡一会儿。家长太忙无暇顾及，给钱让孩子自己解决。一些女孩为保持苗条身材不吃早餐。

19. I carefully poured the liquid into the water, my classmates _______ anxiously beside me to watch what would happen.

A. stood　　 B. standing　　　　　 C. to stand　　　　　 D. were standing

18. --- Would you like to see a film with us this evening?

　 ---- I’d like to, but I can’t ____ the time because I have to finish my composition.

A. pass　　　 B. take　　　　　　 C. afford　　　　　　 D. spend

17. -----It’s really an exciting game!

　 -------Why not _______ us?

A take part in　 B. join in　　　　　 C. join　　　　　　　 D. attend

16. The traffic was _______ by an accident that occurred 10 minutes ago.

A　 put off　　 B. broken down　　 C. stopped　　　　　 D. held up

15. The falling of the new building _____ its soft base.

A resulted in　　 B. suffered from　　 C. led to　　　　　　 D. lay in

14. The plan ______ just because people were unwilling to co-operate.

A. broke down　 B. pulled down　　 C. turned down　　　　 D. put down

11.　 After ______ seemed to be a long time, the old man went out of the professor’s sitting room.

A. it　　　　　 B. what　　　　　 C. that　　　　　　　　 D. which

12 ---- Look! Everything here is under construction.

　 -----What’s the pretty small house that _____ for?

A. is being built　 B. has been built　　 C. is built　　　　　　 D. is building

13　　 ---What happened to the salesman?

--- We don’t know. She　 _______ around here these days.

A. hasn’t seen　 B. didn’t see　　　 C. hasn’t been seen　　 D. hasn’t been seeing

10.　 The driver has drunk too much wine and dangerous things ____ happen to him at any time.

A. should　　　 B. can　　　　　　 C. must　　　　　　　 D. need