29. I know you had many ideas, but you need not trouble ____them.

　A. remember　　　 B. remembering　 C. remembered　　 D. to remember

28.---- There is something wrong with the machine.

　 --- What did he want ____to this machine?

　A. doing　　　　 B. to do　　　　 C. to be done　　　 D. being

27. She reached the top of the hill and stopped ___on a big rock by the side of the path.

　A. to have rested　 B. resting　　　　 C. to rest　　　　 D. rest

26.--- You were lost on your way to the lake, weren’t you?

　 --- Yes, we were and had to stop ____the way.

　a. asking　　　　 B. for asking　　 C. to ask　　　　　 D. having asked

25. He regrets____ his father yesterday.

　A. having not seen　 B. not having seen　 C. not to see　 D. seeing not

24. Don’t forget _____this book to John when you finish reading it.

　A. returning　　 B. of returning　 C. having returned　 D. to return

23.She didn’t remember____ him before.

　A. having met 　B. have met　　 C. to meet　　　　　 D. to having met

22. His failure ____the college made him quite disappointed.

　A. to enter　　 B. in entering　　 C. t arrive early　　 D. entering

21.Please make an effort____.

　A. of arriving early　　　　　　 B. in arriving early

　C. to arrive early　　　　　　　 D. early too arrive

20. Can you imagine the best boy in the class _____in the examination?

　A. cheating　　　 B. to cheat　　　 C. cheat　　　　　 D. cheated