A completely new situation will______ when a new tool comes into use.

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• 1－Miss Jones once _________ music at a local college for ten years and now is an actress. －No wonder I often hear her sing some pop songs.

  A.had taught

  B.has been teaching

  C.taught

  D.is teaching

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• 2Great efforts to increase agricultural production must be made if food shortage _____ avoided.

  A.is to be

  B.can be

  C.has been

  D.will be

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• 3A friend is like a mirror. When you stand in front of a true friend, what is ____back to you?

  A.reflecting

  B.to reflect

  C.being reflected

  D.been reflected

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• 4--- What did the manager say at yesterday's meeting? --- So you______ to him carefully.

  A.won't listen

  B.weren't listening

  C.hadn't listened

  D.haven't listened

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• 5---When did you move to Beijing?______ ---Last year. But I _____ in a school in Japan for 8 years.

  A.has taught

  B.taught

  C.has been taught

  D.has been teaching

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• 6Imagine how excited we were __________that our daughter had been employed by the well-known company.

  A.learning

  B.to learn

  C.having learned

  D.to be learning

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• 7He is a financial manager in Wall Street now, but nobody knows he ________ part-time jobs here and there for survival for eight years.

  A.does

  B.did

  C.had done

  D.has done

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• 8With the development of science, more new technology ___________to the field of IT.

  A.has introduced

  B.is being introduced

  C.is introduced

  D.was introduced

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• 9---It was dangerous to throw that bottle out of the window. You could have hurt someone. ---I'm so sorry! I _______ .

  A.am not thinking

  B.wasn't thinking

  C.haven't thought

  D.don't think

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• 10Millions of pounds' worth of damage　_____　by a storm which swept across the north of England.

  A.has been caused

  B.had been caused

  C.will be caused

  D.will have been caused

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