问题
选择题
He was told that it would be at least three more months ___________he could receover and return to work.
A．when
B．before
C．since
D．that
答案
答案：B
考察连词。 A.当……时 B.在……之前 C.自从……以来 D.那个，引导定语从句。句意：他被告知在他完全康复重新工作之前，最好要有三个月的时间。故选B。