1. They ______ on the program for almost one week before I joined them, and now we _____ on it as no good results have come out so far.

A. had been working; are still working　　 　　　　　　　 B. had worked; were still working

C. have been working; have worked　　　 　　　　　　　　 D. have worked; are still working

36. ____ on time, I think, the medicine will work on him before long.

　 A. Taken 　 　　　　　　　 B. Being taken　 　　　 C. If taking　　　　　　　 D. Take

35. No computers so far ____ can have the same ability as human brains.

　 A. be built 　　 B. having being built 　 C. being built 　　 　　　 D. built

34. --- Why did he let you repeat his instruction time and time over?

　　　--- ____ that I remember what was ____ after he went out.

　 A. To make sure, to do 　　　　　　　　　　　　 　　　 B. Making sure, to be done

　 C. To see to it, to be done 　　　　　　　　　　　 　　　 D. Seeing to, done

33. They live in an island country. There is no man in its ____ area.

　 A. surround　　　　　　　　　　　 B. surrounding 　　　　 C. surrounded 　　　　 D. to surround

32. It rained heavily, ____ severe flooding in that country.

　 A. causing 　　　　　　　　　　　 B. to cause　　　 　　　 C. caused 　　　　　　　 D. and caused

31. “I’ll do some washing this afternoon. Do you have any clothes ____?” Mother asked Jim.

　 A. washing 　　　　　　　 B. washed 　　 　　　 C. to wash 　　　　　　　 D. to be washed

30. When the car crashed, your brother ____?

　 A. escaped hurt, didn't he 　　 　　　　　　　　　　 B. escaped being hurt, didn't he

　 C. escaped hurting, didn't it 　　　　　　　　　　　 D. escaped to be hurt, didn't he

29. The students, ____ at the way the question was put, didn't know how to answer it.

　 A. being surprised 　　 B. surprising　　 　 　　　 C. surprised 　 　　　 D. having surprised

28. ____ the tower building, where you can see the whole city.

　 A. Standing on the top of 　　 　　　　　　　 B. If you climb to

　 C. When you reach the top of 　　 　　　 D. Get to the top of