Doctors say that exercise is important for health,but it__________be  regular  exercise .

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• 1Do you know where my address book is?  — It________ be in the hall cupboard. I think I saw it this morning.

  A.could

  B.can　

  C.will　

  D.must

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• 2You look so tired. You______have stayed up late again.

  A.should

  B.can

  C.may

  D.must

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• 3----- I'm sorry, but we really can't offer you the job if you haven't get a higher education. ----- What a pity!  I___________ hard at high school.

  A.must have worked

  B.should have worked

  C.may have worked

  D.should work

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• 4He_______have been here two hours ago, but he hasn't_______by now.

  A.might; turned to

  B.should; turned up

  C.could; turned in

  D.must; turned on

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• 5Frightened by the noise in the night, the little girl __________not sleep in her room.

  A.must

  B.can

  C.should

  D.dare

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• 6—____________I take the book out? —I'm afraid not.

  A.Will

  B.May

  C.MustD.Need

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• 7--Where is Xiao Wang? --I don't know. He__________ be in the library.

  A.can

  B.must

  C.might

  D.may

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• 8Supposing the weather ________ bad, where would you go ?

  A.is

  B.will be

  C.were

  D.be

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• 9---I hear you've got a set of valuable Australian coins, ______ I have a look? ---Yes, certainly.

  A.Do

  B.May

  C.Shall

  D.should

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• 10I'm afraid Mr. Harding_________see you now. He's busy.

  A.can't

  B.mustn't

  C.shouldn't

  D.needn't

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