问题补充:
He was told that it would be at least three more months he could recover and return to work.
A. when
B. before
C. since
D. that
答案:
A. when
(答案→)B. before
C. since
D. that
解析:考查时间状语从句。句意:据说,至少要过三个多月,他才能恢复过来并返回工作上。A当;B在......之前;C自从;that无意义。It will be+时间+before...“在......之前,还要过多久”,是固定句型。故选B。