Something _______ wrong with the machine, and it _______ not work.

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• 1In his letter, he said it was the third time that he ______ Zhuhai.

  A.had visited

  B.visited

  C.has visited

  D.would visit

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• 2Because of the Russian gas limit to Europe, attempts _________ to use botanical fuel as a source of power.

  A.have made

  B.having made

  C.are being made

  D.will be making

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• 3. If a computer crashes, you will lose the file you _________unless you save it regularly.

  A.are working

  B.work

  C.will work

  D.worked

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• 4—Have you seen your aunt lately? —Yes, in fact I saw her yesterday．I_________ her for several months．

  A.haven't seen

  B.didn't see

  C.hadn't seen

  D.don't see

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• 5. BRT ______ improve a city's public transport and it is a symbol of the city's progress as well.

  A.is meant to

  B.means to

  C.means

  D.is meant for

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• 6Large quantities of fish _______ in the river in the past few days.

  A.were caught

  B.was caught

  C.has been caught

  D.have been caught

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• 7. Many wild animals in the world _______ , so we must take measures to protect them.

  A.are dying out

  B.have died out

  C.died out

  D.die out

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• 8It is ________ the customers' needs that has made chain stores so popular in big cities in Chin

  A.A.meeting

  B.met

  C.to have met

  D.being met

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• 9A new house at the corner of the road ______ for years.

  A.was built

  B.has been built

  C.was been built

  D.has had being built

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• 10The task _______ more difficult than we expect.

  A.proved to

  B.proved us

  C.was proved

  D.proved

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