–It’s a long time I last saw you.Yes and it will be two months we can meet again.A.

问题补充：

–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

答案：

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。