31. ---Why don’t you use the knife?

　 ---It needs ___________________.

　 A. sharpen　　　　 B. being sharpened　　　　 C. sharpening　　　 D. to sharpen

30. The lady said she would buy a gift for her daughter with the _______.

　 A. 20 dollars remained　　　　　　　 B. remaining 20 dollars

　 C. remained 20 dollars　　　　　　　 D. 20 dollars to remain

29. ---Where _______ my book ? I can't see it anywhere.　

--- I _______ it on this table . But now it's gone .

A were you putting ; have put　　　　　 B. had you put ; was putting　

C have you put ; put　　　 　　　　　　 　　D. did you put ; have put　

28. ______ we admit that there are still some problems about NMET,　 we don’t mean that it’s of no use.

　　　 A．While　　　 B．Until　　　　 　　 C．As　　　　　　　 D．Unless　

27. Mr. Smith found that gas ___　　　　 from the pipe when he came back because we forgot to switch off. But at last we were lucky to escape 　　　　　　.

　 A. escaped, being punished　　 B. was escaping, being punished

　 C. escaped, punishment　　　　 D. was escaping, punishing

26. Human facial expressions differ from those of animals in the degree ______ they can be controlled on purpose.

A. with which　　　　　 B. to which　　　　　　 C. of which　　　　　 D. for which

25. With world economic crisis_________, people appeal to the government for more unemployment benefits.

　 A．worsening　 　 B．worsened　 　　　 C．gone bad　 　　　 D．went bad

24. I didn't want to be _________________ with politics at all.

　　　 A．dealt　　　　　　　　　 B．associated　　　　　　 C．involved　　　　　　　 D．consulted

23. The job will be offered to　　　　 is capable of performing it well.

　　　 A．whomever 　　　 B．whoever　 C．the one　 　　　 D．anyone

22. Although the small room is　　　　 the large one, it is more beautifully decorated.

　　　 A．one- third the size of　　　 　　 B．the one- third size of

　　　 C．the size of one-third　 　 D．one-third of the size