. the letter, he went out to post it.A. WritingB. Being writingC. Having writtenD. Writte

发布时间：2020-08-16 07:17:29


.           the letter, he went out to post it.
A. Writing
B. Being writing
C. Having written
D. Written

网友回答

A. Writing
B. Being writing
(答案→)C. Having written
D. Written
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