一Would you like to go to see the film—THE KNOT with me?

  一Sorry．      I have seen it．

  A though    B．unless    C．when     D but

He allowed me ____ the experiment.

        A.to do    B.do     C.doing     D.did

______ of the land in that district ______ covered with trees and grass.

  A. Two fifth…is        B. Two fifth…are     C. Two fifths…is      D. Two fifths…are

--How many eggs are still there in the fridge, Bill?

        ---_____.

       A. No one       B.No       C.Not        D.None

（安徽安庆2009教学质量监测） It is estimated by some experts that by the end of next year we             a fall in house prices by 25%.

    A. will see              B. see         C. has seen       D. will have seen

我不在的时候皮特表现规矩吗？

Every day the boy, together with his classmates, ______ to go to the playground and _____ football, ____ themselves.

A. are noticed; play; enjoying             B. is noticed; plays; enjoying

C. are noticed; plays; enjoys              D. is noticed; play; enjoying   

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 worked; were still working           D．have worked; are still working

The company had about 20 notebook computers but only one-third _______ used regularly. Now we have 60 working all day long.（2006浙江）

  A. is            B. are           C. was         D. were

Food safety is ________ important, so the government spares no efforts to prevent food pollution.

A.strongly              B. reasonably           C.highly           D. naturally