No matter how the enemy frightened him ,he ______say a word .

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• 1You _______ be tired—you've only been working for an hour.

  A.must not

  B.won't

  C.can't

  D.may not

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• 2I recommend you _______ the new restaurant on the corner; the food is excellent.

  A.would try

  B.tried

  C.trying

  D.try

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• 3---- Don't you think it necessary that he _______ to Miami but to New York? ---- I agree, but the problem is ________ he has refused to.

  A.will not be sent; that

  B.not be sent; that

  C.should not be sent; what

  D.should not send; what

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• 4—Is there a basketball match between the LA Lakers and Houston Rockets this Saturday? —There _______ be.I've already got one ticket.

  A.might

  B.would

  C.must

  D.can

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• 5—Can we ski on this mountain? —Of course.However, at no time _______ you do so alone.

  A.could

  B.might

  C.need

  D.must

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• 6There _________ be any difficulty about winning the speech contest now that you're well prepared for it.

  A.mustn't

  B.shan't

  C.shouldn't

  D.needn't

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• 7If we throw away too much waste and can't keep good ecosystem,we _________ our future.

  A.must have destroyed

  B.could be destroying 

  C.may be destroying

  D.must destroy 

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• 8They must have been enjoying themselves there,otherwise they _________ so long.

  A.can't have stayed

  B.wouldn't have stayed

  C.needn't have stayed

  D.couldn't stay

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• 9—Where is Jack?I can't find him anywhere. —He__________ his homework upstairs.

  A.might have done

  B.must have done

  C.must be doing

  D.must do

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• 10The sun rises in the east and sets in the west，so it seems as if the sun ________ round the earth.

  A.were circling

  B.circles

  C.is circling

  D.be circling

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