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    6．The teacher was absorbed in writing something, only now and then to refer to a book or another. A．to stop B．stopped C．stopping D．having stopped 【查看更多】

     

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    The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.

      A. to stop        B. stopped            C. stopping         D.  having stopped

     

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    The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.


    1. A.
      to stop
    2. B.
      stopped
    3. C.
      stopping
    4. D.
      having stopped

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    The teacher was absorbed in writing something, only       now and then to refer to a book or another.

        A．to stop  B．stopped  C．stopping D．having stopped

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     The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.

      A. to stop          B. stopped                C. stopping      D.  having stopped

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    The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.

    A．to stopB．stoppedC．stoppingD． having stopped

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