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
网友回答
A. when
(答案→)B. before
C. since
D. that
解析：考查固定结构。it would be+一段时间+ before。。。要过多长时间才。。。句意:他被告知要过至少三个多月他才能恢复回去上班。所以选B。