I won't tell the student the answer to the math problem until he _____ on it for more than an hour.

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• 1Mike _____ his wedding for a whole month and hopefully everything will be ready tomorrow.

  A.prepares

  B.is preparing

  C.had prepared

  D.has been preparing

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• 2The telephone ______continually in the office all morning. Why doesn't someone answer it?

  A.phones

  B.has phoned

  C.has been phoning

  D.phoned

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• 3— Bob! How's your project? I heard you started it last Friday, right? — Oh! I _____ for it. But I haven't decided when to do it.

  A.have prepared

  B.had prepared

  C.have been preparing

  D.was preparing

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• 4You'd better have a rest. You _____ for more than two hours without a break.

  A.have worked

  B.have working

  C.have been working

  D.have been worked

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• 5He went to Beijing in 1990 and _____ there ever since.

  A.is working

  B.has been working

  C.works

  D.worked

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• 6— Here is Paul! We _____ anxiously for him since last night. — Maybe something happened to him.

  A.waited

  B.were waiting

  C.had waited

  D.have been waiting

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• 7Please don't phone him between l and 3 p.m. tomorrow. He _____ a lecture then.

  A.has delivered

  B.has been delivering

  C.will be delivering

  D.delivers

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• 8—Guess what，we've got our visas for a short－term visit to the UK this summer. —How nice！You ________ a different culture then.

  A.will be experiencing

  B.have experienced

  C.have been experiencing

  D.will have experienced

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• 9She got stuck in a terrible traffic jam on the highway to Shanghai，or she    dinner with her family now.

  A.will be having

  B.would be having

  C.is having

  D.was having

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• 10Isn’t it lovely to think that I ________ myself on the sunny beach tomorrow at this time.    

  A.will enjoy

  B.will be enjoying

  C.am enjoying

  D.shall enjoy

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