---It’s a long time I saw you last.
---Yes, and what a pity it is now that it will be a long time we see each other again.
A. before; since
B. since; when
C. since; before
D. when; before
网友回答
A. before; since
B. since; when
(答案→)C. since; before
D. when; before
解析：考查连词。本题考查It + is /has been+ time + since 自从...起+ sb /sth did ；It + was /will be+ time + before 多久之后+ sb /sth did/do 两个结构，故选C。