It will be at least three weeks he recovers from his illness and returns to work.A. before

发布时间：2020-08-16 22:15:48

It will be at least three weeks     he recovers from his illness and returns to work.
A. before
B. when
C. since
D. after

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(答案→)A. before
B. when
C. since
D. after
解析：考查固定句型。It be 一段时间before从句，意为：一段时间以后某事才发生。句意：至少3个星期以后他才从疾病中恢复重新回到工作岗位上。
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