Question

【題目】—It's a long time ________ I saw you last.
—Yes，and what a pity！It will be a long time ________ we see each other again.
A.since; before
B.when; when
C.since; when
D.before; since

Answer 1

【答案】A
【解析】句意：—自從上次看見你到現(xiàn)在有很長時間了!—是的，很長時間以后我們才能再一次見面真是一件遺憾的事情。第一空根據(jù)時態(tài)及句意可知應該用since，第二空的句型：it be +一段時間+before+從句；意為：一段時間以后某事才發(fā)生。故選A。