If the new safety system________to use, the accident would never have happened.

试卷相关题目

• 1The student checked his writing carefully for fear that it________some spelling mistakes.

  A.had

  B.would have

  C.will have

  D.should have

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• 2George would certainly have attended the meeting if his car________.

  A.didn’t break down

  B.won’t break down

  C.hadn’t broken down

  D.wouldn’t break down

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• 3I’d rather you________make any comment on the issue at present.

  A.don’t

  B.wouldn’t

  C.didn’t

  D.shouldn’t

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• 4It is imperative that you________here in time.

  A.shall arrive

  B.may arrive

  C.could arrive

  D.arrive

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• 5The doctor asked that he________there.

  A.not to go

  B.hadn’t gone

  C.not go

  D.wouldn’t go

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• 6The flowers looked as if they________for a long time.

  A.haven’t watered

  B.didn’t water

  C.hadn’t beenwatered

  D.watered

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• 7Had it not been for his carelessness, David________first prize in the mathematics contest.

  A.would win

  B.would have won

  C.will win

  D.won

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• 8It is essential that you________ train tickets as early as possible before the Spring Festival.

  A.must book

  B.will book

  C.are booking

  D.book

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• 9________a postgraduate, I would at least master two foreign languages.

  A.Was I to become

  B.Were I to become

  C.Had I become

  D.I should become

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• 10I wish I________you in our laboratory after you grow up.

  A.will meet

  B.would meet

  C.may meet

  D.can meet

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