They the train to Beijing．Otherwise, they would have returned home．A. need have caughtB.

发布时间：2020-08-29 22:27:41

They      the train to Beijing．Otherwise, they would have returned home．
A. need have caught
B. must have caught
C. must catch
D. may catch

网友回答

A. need have caught
(答案→)B. must have caught
C. must catch
D. may catch
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