---It’s a long time I saw you last.---Yes and what a pity it is now that it will be a lo

问题补充：

---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

答案：

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。