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科目： 來(lái)源： 題型：單選題

________from space, our earth, with water covering 70% of its surface, appears as a “blue planet”.


  1. A.
    Seen
  2. B.
    Seeing
  3. C.
    To see
  4. D.
    Having seen

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科目： 來(lái)源： 題型：單選題

Tom regrets ________harder at school.


  1. A.
    did not work
  2. B.
    having not worked
  3. C.
    not having worked
  4. D.
    not have worked

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科目： 來(lái)源： 題型：單選題

When a machine of this kind is ________, the materials must be carefully chosen for its parts.


  1. A.
    built
  2. B.
    building
  3. C.
    to build
  4. D.
    to be built

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科目： 來(lái)源： 題型：單選題

If you go on letting your dog ________after cars, he'll end by ________over.


  1. A.
    to run, running
  2. B.
    running, running
  3. C.
    run, running
  4. D.
    run, being run

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科目： 來(lái)源： 題型：單選題

It is a good season in which ________in Switzerland.


  1. A.
    travel
  2. B.
    traveling
  3. C.
    to travel
  4. D.
    traveled

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科目： 來(lái)源： 題型：單選題

We need help badly, so ________ the interview with the applicants as quickly as possible．


  1. A.
    realize
  2. B.
    arrange
  3. C.
    manage
  4. D.
    hold

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科目： 來(lái)源： 題型：單選題

The brave soldier preferred ________ rather than ________．


  1. A.
    to die;giving in
  2. B.
    to die;to give in
  3. C.
    to lose;losing
  4. D.
    dying;to give in

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科目： 來(lái)源： 題型：單選題

Three hours later, people ________ from the building on fire．


  1. A.
    tried to escape
  2. B.
    could escape
  3. C.
    managed to escape
  4. D.
    tried escape

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科目： 來(lái)源： 題型：單選題

She would love to have gone to the party, but she _______ extra hours to prepare for a meeting


  1. A.
    had to work
  2. B.
    had worked
  3. C.
    could work
  4. D.
    would have worked

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科目： 來(lái)源： 題型：單選題

We plan to reach the North Pole in mid-July, and by then we _______ for six weeks.


  1. A.
    are walking
  2. B.
    have been walking
  3. C.
    will be walking
  4. D.
    will have been walking

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