We have been told that under no circumstance ______ the telephone in the office for personal affairs.

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• 1—How much do you know about the 3D film technology? —A little. Not until _______the hot movie Avatar _______ some about it.

  A.did I see; did I begin to learn

  B.I saw; I began to learn

  C.I saw; did I begin to learn

  D.did I see; I began to learn

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• 2When first ________ to the market, the computer software was not a success due to its complexity in operation.

  A.introducing

  B.being introduced

  C.introduced

  D.to be introduced

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• 3I have been living in the United States for twenty years, but seldom _____ so lonely as now．

  A.have I felt

  B.I had felt

  C.I have felt

  D.had I felt

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• 4Only by shouting at the top of his voice, _______.

  A.he was able to make himself hear

  B.was he able to make himself hear

  C.was he able to make himself heard

  D.he was able to make himself heard

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• 5So extraordianry __________ that it left a deep impression on visitors.

  A.was the Shanghai 2010 Expo

  B.the Shanghai 2010 Expo was

  C.did the Shanghai 2010 Expo

  D.the Shanghai 2010 Expo did

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• 6I suggest not only _______to the meeting but also give a speech there.

  A.did he go

  B.is going

  C.should he go

  D.he should go

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• 7—Don't forget to go to the football match tomorrow. —I ________.

  A.don't

  B.won't

  C.shouldn't

  D.mustn't

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• 8The experiment shows that proper amounts of exercise, if ________ regularly,  can improve our health.    

  A.being carried out

  B.carried out

  C.carrying out

  D.to carry out

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• 9If _______ in class, you will have to clean the classroom for a week as a punishment.

  A.caught sleeping

  B.caught to sleep

  C.catching sleeping

  D.to catch to sleep

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• 10Only by practising constantly__________ greater progress.

  A.we can make

  B.then we will make

  C.can we make

  D.we must make

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