--- I hear Robert has gone to Harvard University for his master’s degree. --- Oh, how nice

发布时间：2020-08-15 02:19:08

--- I hear Robert has gone to Harvard University for his master’s degree.
--- Oh, how nice! Do you know when he     ?
A. was leaving
B. left
C. had left
D. has left

网友回答

A. was leaving
(答案→)B. left
C. had left
D. has left
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