问题
选择题
—How long is it _____ we last met?
—About five years. You haven't changed much.[ ]
A. before
B. since
C. when
D. that
答案
答案：B
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—How long is it _____ we last met?
—About five years. You haven't changed much.[ ]
A. before
B. since
C. when
D. that
答案：B