It's hard to say what kind of person he is. Sometimes he is very nice; at other times he _______ be very cold.

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• 1Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.

  A.must go through

  B.may go through

  C.must have gone through

  D.could have gone through

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• 2--- I'm sorry．I _______ at you the other day． --- Forget it．I was a bit out of control myself．

  A.shouldn't shout

  B.shouldn't have shouted

  C.mustn't shout

  D.mustn't have shouted

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• 3If it ________ for the heavy rain then, we would have arrived here ahead of time.

  A.shouldn't be

  B.weren't

  C.had not been

  D.be not

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• 4______ for the fact that you were lazy, you could have finished the assignment by now.

  A.It were not

  B.Weren't it

  C.Had it not been

  D.Had not been

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• 5—Yao Yuan, a disabled woman, won the National Championships Cup last week. —My goodness! She _______a lot of difficulties!

  A.may go through

  B.might go through

  C.must have gone through

  D.ought to have gone through

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• 6It has been announced that candidates ______ remain in their seats until all the papers have been collected.

  A.can

  B.shall

  C.will

  D.may

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• 7Where have you been ? — I _______in the heavy traffic .Otherwise I _______ here earlier.

  A.have got stuck; would have come

  B.got stuck; was

  C.got stuck ; would have come

  D.had stuck ; would come

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• 8No person __________ carry a mobile phone into the examination room during the national college Entrance Examinations．

  A.shall

  B.must

  C.can

  D.need

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• 9It is not like her to be so impolite; she ______ you when you greeted her.

  A.might not have heard

  B.should not have heard

  C.mustn't hear

  D.shouldn't hear

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• 10--Listen! Someone is singing in the next room．Who ______ it be? Is it Wei Fang? --No．It ______ be her．She is at school now．

  A.can; may not

  B.must; mustn't

  C.can; can't

  D.may; won't

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