问题描述:
Did mary come to the party I do not know .she_wh
-Did Mary come to the party I do not know .she_while I was out.
-I do not know .She _while I was out.
A.may have come B must have come C might come D could come为什么不用D
-Did Mary come to the party I do not know .she_while I was out.
-I do not know .She _while I was out.
A.may have come B must have come C might come D could come为什么不用D
问题解答:
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