I by my teacher’s home when I was back h

问题选择题

I by my teacher’s home when I was back home last night.

A．dropped

B．dropped on

C．drop in

D．dropped into

答案

答案：A

考查固定短语。drop in at sp.“拜访某地”；drop in on sb.“拜访某人”。drop by“顺便拜访”。句意“昨晚当我回家时，我顺便拜访了老师家。”故选A。