31. a written permission, he had to write another letter to the president of the university. A.Not giving B.Not having been given C.Having not given D.Having not been given 查看更多

 

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_____a written permission, he had to write another letter to the president of the university.

A.Not giving

B.Not having been given

C.Having not given

D.Having not been given

 

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________ a written permission, he had to write another letter to the president of the university.

A.Not giving 

B.Not having been given

C.Having not given 

D.Having not been given

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______a written permission, he had to write another letter to the president of the university.


  1. A.
    Not giving
  2. B.
    Not having been given
  3. C.
    Having not given
  4. D.
    Having not been given

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_____ a written permission, he had to write another letter to the president of the university.
[     ]
A. Not giving
B. Not having been given
C. Having not given
D. Having not been given

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_____a written permission, he had to write another letter to the president of the university.

       A.Not giving                 B.Not having been given     

       C.Having not given            D.Having not been given

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