中文谷―It’salongtime Isawyoulast.―Yes，andwhatapity，itwi...
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问题详情：
―It’s a long time I saw you last.
―Yes，and what a pity，it will be a long time we see each other again.
A. before; since B. since; before C. when; when D. since; when
【回答】
B知识点：连词
题型：选择题
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