问题

He was told that it would be at least three more months _____ he could recover and return to work
A:when
B:since
C:before
D:that
B:since
C:before
D:that
正确答案是:
同类题型
n as the manager entered his office, he began to_____the telephone book on his desk.
Riding bikes has advantages __________driving cars ________ many aspects.
____________________—He is generous and polite.
It made all the Chinese happy _____ China succeeded in sending up the first manned spaceship.