______ our earth, or else it will be no longer fit for us to live on.

试卷相关题目

• 1It is the first time in a year and a half that I _______ the night face to face.

  A.had seen

  B.have seen

  C.saw

  D.see

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• 2______ the police three months to recover the stolen things

  A.It needed

  B.It kept

  C.It spend

  D.It took

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• 3I spent the whole day repairing the car. The work was______ easy

  A.nothing but

  B.something but

  C.anything but

  D.all but

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• 4 He ______ in the north, but now he ______ here.

  A.used to live; is used to the life

  B.use to live; is used to live

  C.used to living; is used to living

  D.used to live; is used to live

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• 5It is ten years _______ he graduated from the university

  A.that

  B.until

  C.since

  D.from

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• 6It _______ that she has lost interest in studying English.

  A.seemed

  B.appears

  C.looks

  D.remains

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• 7It was surprising ______ most people paid more than 100 dollars just to see that famous star.

  A.which

  B.that

  C.whether

  D.where

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• 8Researchers have found clear and convincing evidence ________ happiness is the key to better health and longer lives.

  A.where

  B.whether

  C.how

  D.that

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• 9When I came into the classroom this morning, it ______ me that I had left my book in my dormitory.

  A.occurred

  B.was occurred

  C.occurred to

  D.was occurred to

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• 10In the exam , the__________ you are, the__________ mistakes you'll make

  A.carefully; little

  B.more carefully ;fewer

  C.more careful; fewer

  D.more careful; less

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