They _________ have got lost, or had an accident.

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• 1---- It's the office! So you _____ know eating is not allowed here. ---- Oh, sorry.

  A.must

  B.will

  C.may

  D.need

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• 2______ I have a quick word with you? Something important has happened.

  A.Must

  B.Could

  C.Would

  D.Should

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• 3I know you have eaten all sorts of junk food your mother and I probably _____ you have.

  A.shouldn't let

  B.can't let

  C.couldn't have let

  D.shouldn't have let

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• 4—We are worried about Tom. Why hasn't he come back? —Don't worry. He ______ in a traffic jam.

  A.might be caught

  B.may have been caught

  C.can have been caught

  D.should have been caught

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• 5E-Commerce ______ mislead customers at times even though it's more convenient and faster in general.

  A.shall

  B.should

  C.can

  D.must

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• 6---I stayed at a hotel while in New York. ---Oh, did you? You ________ with Barbar

  A.A.could have stayed

  B.could stay

  C.would stay

  D.must have stayed

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• 7—Why are you late again? —Something happened to our friend Wang Fei. I _____ to help him.

  A.did refuse

  B.needn't have refused

  C.couldn't well refuse

  D.did not say no

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• 8---Do you still remember when we went to Chong qing? ----I can't remember now but_____ sometime last summer?

  A.could it be

  B.might it be

  C.must it have been

  D.could it have been

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• 9-Will the book I ordered arrive in time? -It _______, if there is no traffic jam.

  A.must

  B.can

  C.should

  D.would

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• 10Sometimes smiles around the world ______ be false, hiding other feelings like anger, fear or worry.

  A.must

  B.would

  C.should

  D.can

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