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    科目： 来源： 题型：单选题

    If everyone ________ how to deal with the pollution, the world ________ better.


    1. A.
      knows; will be
    2. B.
      had known; would be
    3. C.
      knew; would be
    4. D.
      would know; had been

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    科目： 来源： 题型：单选题

    He managed to escape from the burning building without ________.


    1. A.
      injuring
    2. B.
      injured
    3. C.
      been injured
    4. D.
      being injured

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    科目： 来源： 题型：单选题

    ________ warm evenings the old man would sit in the yard.


    1. A.
      In
    2. B.
      On
    3. C.
      At
    4. D.
      During

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    科目： 来源： 题型：单选题

    Air is the mixture of gases in which ________ the gas is oxygen.


    1. A.
      not every of
    2. B.
      not all
    3. C.
      none of
    4. D.
      all of

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    科目： 来源： 题型：单选题

    The speaker talked about the full use that he ________ the spare time.


    1. A.
      made of
    2. B.
      made up
    3. C.
      took up
    4. D.
      took off

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    科目： 来源： 题型：单选题

    Class will be over ________.


    1. A.
      before long
    2. B.
      long before
    3. C.
      long after
    4. D.
      shortly after

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    科目： 来源： 题型：单选题

    Now I've been out of ________ work for weeks, I've joined the ranks of ________ unemployed．


    1. A.
      the; 不填
    2. B.
      the; the
    3. C.
      不填; the
    4. D.
      不填; an

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    科目： 来源： 题型：单选题

    Paper ________ fire easily. When it is ________ fire , you should cover it .


    1. A.
      on, caught
    2. B.
      is on , caught
    3. C.
      catches , on
    4. D.
      is caught , on

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    科目： 来源： 题型：单选题

    Mary was ________ the letter from Tom, but it didn’t reach her forsome reason.


    1. A.
      expecting
    2. B.
      waiting
    3. C.
      waiting for
    4. D.
      expected for

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    科目： 来源： 题型：单选题

    It was not until midnight that ________ the camping site．


    1. A.
      did they reach
    2. B.
      they had reached
    3. C.
      had they reach
    4. D.
      they reached

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