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______ over and over again, but he still couldn't understand.

A．Having explained

B．Having been explained

C．Explaining

D．It had been explained

 

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______ over and over again, but he still couldn't understand.


  1. A.
    Having explained
  2. B.
    Having been explained
  3. C.
    Explaining
  4. D.
    It had been explained

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______ over and over again, but he still couldn't understand.

       A.Having explained              B.Having been explained      

       C.Explaining                 D.It had been explained

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______ over and over again, but he still couldn’t understand.

A．Having explainedB．Having been explained
C．ExplainingD．It had been explained

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I explained over and over again in order to try not to make myself ________．


  1. A.
    understood
  2. B.
    understand
  3. C.
    misunderstand
  4. D.
    misunderstood

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