--- Could you tell me what he said just now? --- Sorry, I ______ what was going on outside.

  A. had thought   B. was thinking      C. thought      D. think

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3.  ______, I think, and all the problems could be settled.

A. If you make more efforts

B. Making more efforts

C. A bit more effort

D. To have made more efforts

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The work ____ be finished in such a short time .

A . wasn''t able to     B . couldn''t     C . ought      D . could

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29. I wish I_________ longer this morning,but I had to get up and come to class.

A.could have slept                     B.slept

C.might have slept                     D.have slept

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I talked for a long time , and in the end I ____ make her believe me .

A . could      B . can      C . must      D . was able to

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— Would you please go to the cinema with me ?   — Yes , I ____ .

A . will        B . would      C . could       D . should

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