28. Mr. Smith often helps me __ my study.　 A. for　 B. with　 C. in　 D. about

27. No one can ___ the wheel of history.　

A.　　 hold up　 B. get hold of　 C. hold back　 D. take hold of

26. He said that he would __ London soon. A. leave to B. leave for C. leave from　 D. leave away

25. They all went to ___ at the train station.

A.　　 see me off　 B. see off me　 C. put me off　 D. put off me

24. If anything happens ___ the machine, please let us know. A. with　 B. on　 C. to　 D. at

23. I thought he would get __ trouble, and now he is really __ trouble .

A. into; in　 B. into; into　 C. in; in　 D. in; into

22. They came to help us as soon as they got __ their work.　

A.　　 over　 B. on　 C. with　 D. through

21. We must get rid ___ flies.　 A. with　 B. of　 C. off　 D. against

20. They both ___ the ball-pen in every room, but they couldn’t ____ it. A. found; looked for

　　　 B. looked for; find　 C. looked after; found　 D. looked at; find out

19. Keep ___ your courage. Don’t lose heart.　 A. out　 B. on　 C. up　 D. off