It is well known to us all that a lot of rivers _______by factories.

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• 1Although he is only 14 years old, he _______drugs for two years.

  A.addicts

  B.has addicted to

  C.has addicted

  D.has been addicted to.

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• 2If it ______tomorrow, we'd stay at home.

  A.had rained

  B.is raining

  C.will rain

  D.should rain

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• 3We were all surprised when he made it clear that he ______ office soon.

  A.leaves

  B.left

  C.would leave

  D.had left

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• 4The places of interest in Xi'an attract my family all the time, and I hope we _____ ourselves this time next year.

  A.are enjoying

  B.are to enjoy

  C.will enjoy

  D.will be enjoying

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• 5----Your job_____ open for your return. ---- Thanks.

  A.will be kept

  B.will keep

  C.had kept

  D.had been kept

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• 6The hostess of the party, who ______ as a doctor for five years, is president of a famous private school.

  A.worked

  B.has worked

  C.works

  D.had worked

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• 7—Why didn't you answer my phone at 10 am? —I________ for my decayed tooth in the clinic.

  A.treated

  B.was treated

  C.have been treated

  D.was being treated

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• 8The 2012 London Olympic Games _________ to attract several billion TV viewers around the globe.

  A.is expected

  B.will be expected

  C.are expected

  D.has been expected

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• 9You ____ television．Why not do something more active?

  A.always watch

  B.are always watching

  C.have always watched

  D.have always been watching

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• 10— Do you agree that lions and tigers ______ the cat family? — I have no ide

  A.A.belong

  B.are belonged to

  C.are belonging to

  D.belong to

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