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
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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
解析