问题描述：
一道英语选择题,为什么选A,而不选C
It was a long period of silence and _____,“I might help you out.”
A.then came a soft voice B.then did come a soft voice
C.then comes a soft voice D.then would a soft voice come
It was a long period of silence and _____,“I might help you out.”
A.then came a soft voice B.then did come a soft voice
C.then comes a soft voice D.then would a soft voice come
问题解答：
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