Half an hour has been made full ______ of _____ the problem.

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• 1I'm not a teacher in this school．I _____ until a new teacher arrives．

  A.am just helping out

  B.could just help out

  C.just help out

  D.have just helped out

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• 2My plane _________ at 8:30 am, so I _______ home at 8:00 tomorrow morning.

  A.leaves; leave

  B.leaves; am leaving

  C.is leaving; am leaving

  D.is leaving; leave

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• 3Up to now, the family's business ______good. I hope our good luck will continue. 

  A.is

  B.was

  C.will be

  D.has been

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• 4The fact that so many people still smoke in public places ______ we may need a nationwide campaign to raise awareness of the risks of smoking.

  A.suggest

  B.suggests

  C.suggested

  D.suggesting

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• 5—Doug, where is your coach, Chow? —See, he ______ by a group of journalists.

  A.is being interviewed

  B.has been interviewed

  C.is interviewing

  D.has interviewed

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• 6Kathy told me that all the doors and windows _______ when she arrived this morning. 

  A.have cleaned

  B.have been cleaned

  C.had cleaned

  D.had been cleaned

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• 7Over the past few years the cost of living __________considerably.

  A.has been raised

  B.has risen

  C.was raising

  D.was rising

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• 8It is said that the book _________ many events that can't be found in other books.

  A.covers

  B.writes

  C.prints

  D.reads

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• 9Jack doesn't smoke now, but he ______ for almost twenty years.

  A.smoked

  B.was smoking

  C.has smoked

  D.had smoked

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• 10When the old man recalled the old hard times, he always said, “ It was the first time that I ____ a full meal. I remembered it forever.”

  A.have eaten

  B.had eaten

  C.were eating

  D.ate

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