题目内容
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
B
解析:
略
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题目内容
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
B
略