________ the safety of gas, the government has checked the city's gas supply system thoroughly.

试卷相关题目

• 1Once he has determined ________ something, no one can change his mind.

  A.to do

  B.doing

  C.to have done

  D.having done

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• 2Dina, ________ for months to find a job as a waitress, finally took a position at a local advertising agency.     

  A.struggling

  B.struggled

  C.having struggled

  D.to struggle

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• 3Helen had to shout ________ above the sound of music.     

  A.making herself hear

  B.to make herself hear

  C.making herself heard

  D.to make herself heard

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• 4She will tell us that each of us has a role ______ in making the earth a better place to live．

  A.to have played

  B.to play

  C.to be played

  D.to be playing

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• 5Bowing to others is considered ______ but bowing to difficulty is not considered a good quality    

  A.to be a good manner

  B.a good manners

  C.to be good manners

  D.being good manners

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• 6This is the only way we can imagine ________ the overuse of water in students' bathrooms.

  A.reducing

  B.to reduce

  C.reduced

  D.reduce

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• 7I don't want ________ like I'm speaking ill of anybody, but the manager's plan is unfair.       

  A.to sound

  B.to be sounded

  C.sounding

  D.to have sounded

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• 8— What do you enjoy most ________ in the summer holidays? — Playing table tennis.

  A.killing time

  B.to kill time

  C.spending the time

  D.to spend the time

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• 9More UN police have been sent there ______ the situation in Haiti in order.

  A.kept

  B.will keep

  C.to keep

  D.keeping

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• 10— What do you think of the book I lent you yesterday?— Oh, not too bad.It's not too difficult________.

  A.to read

  B.to be read

  C.reading

  D.being read

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