By the middle of the 21st century , the vast majority of the world's population ________ in cities rather than in the country.

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• 1The law in almost all states used to require stores to close on Sunday, but now in most states, it no longer _____.

  A.is

  B.does

  C.did

  D.Has

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• 2—How about buying Sam a mobile phone? After all, he isn't a boy any more. —I think it's necessary, for we sometimes want to make sure if he ______home for dinner.______ 

  A.will come

  B.comes

  C.has come

  D.would come

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• 3Collecting stamps as a hobby___________ increasingly popular during the past fifty years.

  A.becomes

  B.became

  C.has become

  D.had become

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• 4--- Will you go to the lecture this afternoon? ----No. I_______ to the lecture before.

  A.listened

  B.had listened

  C.have listened

  D.was listening

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• 5After he had recovered from his injury, he caught a squirrel (松鼠) and raised it as a pet. Soon he ______ home snakes and other creatures from the woods near his school.

  A.was bringing

  B.is bringing

  C.has brought

  D.had brought

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• 6Dr. Manette had been mentally ____ by his long years alone in prison and his hair had turned white.

  A.disturbed

  B.troubled

  C.worried

  D.Damaged

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• 7He hasn't come yet. What do you think__________to him?

  A.happens

  B.has happened

  C.happening

  D.to happen

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• 8I______him a lift to his house, but he ________ with thanks.

  A.offered; answered　　

  B.offered; declined 　

  C.have offered; has declined 　　

  D.presented; answered

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• 9--- Sorry to have interrupted you. Please go on.______ --- Where was I? --- You ________ you didn't like to be prejudiced against.

  A.said

  B.had said

  C.were saying

  D.had said

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• 10I could have offered you some help last weekend, but I ______ with my work at that time.

  A.would be occupied

  B.was occupying

  C.had been occupied

  D.was occupied

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