31. Scientists say it may be five or ten years ________ it is possible to test this machine on human patients.

　　 A. since　　　　 B. when　　 C. after　　 D. before

30. We have got a lot of work to ________, so let's start right now.

　　 A. get through　　　　　　　 B. get over　　　　　　　 C. get along　　　　　　 D. get away

29. It isn’t so much whether he works hard; the question is whether he works _________.

　　 A. above all　　　　　　　　 B. in all　　　　　　　　　 C. at all　　　　　　　　　 D. after all

28. Neither of the young men who had tried to get the job in the company _______.

　　 A. has been accepted　　　　　　　　 B. have been accepted

C. was accepted　　　　　　　　　　 D. were accepted

27. ___________ was lying.

A. Those who told you that　　　　　　 B. Anyone told you that

C. Whoever told you that　　　　　　　 D. Who told you that

26. No matter how frequently ________, the works of Laoshe always attract large audi­ence.

A. performed　　　　　　　　　　　　 B. performing　　

C. to perform　　　　　　　　　　　　 D. to be performed　

25. ________ he realized it was too late to return home.

A. Not until dark　　　　　　　　　　　　　　　　　　　　 B. It was until dark that

C. It was not until dark that　　　　　　　　　　　　 D. It was dark that

24. -Do you have an extra ticket for the concert?

-Yes.

-Well, who would you rather ________ with you, George or me?

A. have to go　　　　　　　　　　 B. have gone　　　

C. to have gone　　　　　　　　　 D. have go

23. The people, ______ had heen damaged by the flood, were given help by the Red Cross.

A.　 all of their homes　　　　　 B. all whose homes

C. whose all homes　　　　　 D. all of whose homes

22. -What do you think of the director of the film?

　　　 -Oh, he is ______ director who is pleasant to work with. It’s ______ pleasure to work with him.

A. the; the　　　　 B. a; a　　 C. a; the　 D. the 不填