–It’s a long time I last saw you.
--Yes, and it will be two months we can meet again.
A. before; since
B. when; before
C. since; when
D. since ; before
网友回答
A. before; since
B. when; before
C. since; when
(答案→)D. since ; before
解析：这题考查句型：It‘s+一段时间+since…“自从…有多久”，和It will be +一段时间+before…,“将要有多久才…”，句意是：从我最后一次见到你已经很长时间了。--是，我们再见面还要两个月。选D。