问题
选择题
He was told that it would be at least three more monthshe could recover and return to work.
A．when
B．before
C．since
D．that
答案
B。
由语境逻辑可以推出在他恢复健康重新工作之前要过至少三个月，因此该空应填before引导时间状语从句。
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