He is believed in at his office on his way home.A. droppingB. to have droppedC. having dr

发布时间：2020-08-17 14:49:45

He is believed     in at his office on his way home.
A. dropping
B. to have dropped
C. having dropped
D. to be dropped

网友回答

A. dropping
(答案→)B. to have dropped
C. having dropped
D. to be dropped
解析：首先be belived to do是固定用法；drop in at接地点表示拜访某地。
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