Tom has been in the factory he left school.A. whenB. sinceC. as soon asD. whether

发布时间：2020-08-16 12:35:34

Tom has been in the factory     he left school.
A. when
B. since
C. as soon as
D. whether

网友回答

A. when
(答案→)B. since
C. as soon as
D. whether
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