问题描述：
一道英语题jack _________yet ,otherwise he would telephoned you.
A.mustn't have arrived
B.shouldn't have arrived
C.can't have arrived
D.needn't have arrived 为什么选C.A为什么不可以?
A.mustn't have arrived
B.shouldn't have arrived
C.can't have arrived
D.needn't have arrived 为什么选C.A为什么不可以?
问题解答：
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