题目内容
【题目】Yesterday, I the subway home when I suddenly found I was on the wrong line.
A. took B. was taking C. had taken
【答案】B
【解析】句意：昨天，当我突然发现我拨错电话的时候，我正在乘地铁回家。这里是when引导的时间状语从句，当某个动词发生的时候，某个动作正在进行，根据题意，故选B。
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题目内容
【题目】Yesterday, I the subway home when I suddenly found I was on the wrong line.
A. took B. was taking C. had taken
【答案】B
【解析】句意：昨天，当我突然发现我拨错电话的时候，我正在乘地铁回家。这里是when引导的时间状语从句，当某个动词发生的时候，某个动作正在进行，根据题意，故选B。