The development of China's economy ________ since the 80s of last century.    

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• 1Excuse me,Marcia,a reporter from Vanity Fair_________all day. Could you speak to her now?       

  A.phones

  B.has phoned

  C.has been phoning

  D.phoned

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• 2-That's the third time he's won the award in this field.-Yes. He ________ his maximum potential in the past decade.

  A.explored

  B.is exploring

  C.has been exploring

  D.has explored

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• 3—Tony, come down and help me with the heavy box!   —Come on! I _____ all day long. Get Peter to do that!  

  A.work

  B.had been working

  C.had worked

  D.have been working

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• 4Look at the sweat on her face. She________the house since she got up this morning.

  A.is cleaning

  B.has been cleaned

  C.was cleaning

  D.has been cleaning

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• 5Tom ________ in the library every night over the last three months.

  A.works

  B.worked

  C.has been working

  D.had been working

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• 6Excuse me, Marcia, a reporter from Vanity Fair ____ all day.  Could you speak to her now?    

  A.phones

  B.has phoned

  C.has been phoning

  D.phoned

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• 7By the time you arrive in London, we   in Europe for two weeks.

  A.shall stay

  B.have stayed

  C.will have stayed

  D.have been staying

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• 8She ought to stop reading；she has a headache because she________for too long.

  A.has been reading

  B.had read

  C.is reading

  D.read

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• 9We ________ on this project for four hours. Let's have a rest.

  A.are working

  B.have been working

  C.worked

  D.had worked

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• 10— Have you watched the nine o'clock news? — No. I ______ my homework at home all the morning.

  A.haddone

  B.havedone

  C.did

  D.havebeendoing

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