问题
选择题
---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
答案：C
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。