问题描述:
Come and see me whenever ________.
A it is convenient to you
B it will be convenient to you
想问难道is没有任何时态可变吗?还是另有原因?
A it is convenient to you
B it will be convenient to you
想问难道is没有任何时态可变吗?还是另有原因?
问题解答:
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