Computers ________in offices and homes since 1970s．

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• 1The fog was so heavy this morning that drivers could hardly _______ the things just ten meters away from them.

  A.figure out

  B.look out

  C.make out

  D.try out

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• 2Ever since Ming furniture went on exhibit in Beijing, there ________large crowds at the World Art Museum every day.

  A.was

  B.have been

  C.has been

  D.were

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• 3Susan decided not to work on the program at home because she didn't want her parents to know what she_________.

  A.has done

  B.had done

  C.was doing

  D.is doing

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• 4he young man ________ a suggestion at the meeting.

  A.come about

  B.come into

  C.come up with

  D.come out with

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• 5All the Harry Potter books by Joanne Rowling, a poor single mother ________ in Edinburgh, ________ all over the world.

  A.lives; are well sold

  B.lives; sell good

  C.living; sell well

  D.living; are well sold

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• 6Great changes _________ in China in the past 30 years and many Chinese are living a happy life today.

  A.took place

  B.were taken place

  C.have taken place

  D.have been taken place

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• 7I didn't mean to keep you waiting here for a long time. There are several traffic jams on the way. Can you ________ me?

  A.apologize

  B.interrupt

  C.forgive

  D.behave

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• 8—Hi, Jack．You look a bit fat now． —Yes, I ______ five pounds recently．

  A.am putting on

  B.will put on

  C.have put on

  D.had put on

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• 9—Your colleague's spoken English is quite good, Amy． — No wonder, as she ________ in the USA for two years．

  A.worked

  B.has been working

  C.had worked

  D.has worked

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• 10Tom was badly injured in the accident last week. A new manager________ to take his place since then. 

  A.has been arranging

  B.has arranged

  C.was arranged

  D.has been arranged

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