问题

It’s a long time I saw you last— Yes, and what a pityIt will be a long time we see each other again

A:before; since
B:since; before
C:when; when
D:since; when

正确答案是：

同类题型

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are in trouble, Mike is always willing to_______ a hand

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There is a photo on the wall____ the photoof Lei Feng