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_______ a reply,he decided to write again.

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_______ a reply,he decided to write again.
A.Not receiving
B.Receiving not
C.Not having received
D.Having not received
_______ a reply,he decided to write again.
答案:C Not having received a reply.
很显然,由句子意思理解,最好的答案选C,还没有收到回复,所以我决定在写一遍.因为句子没有主语,不是祈使句的话或特殊句子,用doing,所以是having,为什么用完成时态呢?因为没有受到回复,他决定再写一封,这个没有受到回复的事情对现在他的行为造成了影响,所以用have.这种情况下,not在动词前面.
希望能到你哈,觉得好就采纳吧,