I’m terribly sorry for you waiting for such a long time.A. having keptB. being keptC. hav

发布时间：2020-08-15 03:10:35

I’m terribly sorry for      you waiting for such a long time.
A. having kept
B. being kept
C. having being kept
D. keeping

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(答案→)A. having kept
B. being kept
C. having being kept
D. keeping
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