Question

【题目】I took the wrong train______, I didn’t even know it until half an hour later.

A. by mistakes B. by mistake C. by accident D. with mistakes

Answer 1

【答案】B

【解析】句意：我误乘错了火车，直到半小时后才知道。考查介词短语辨析题。AD两项是错误表达，可排除。by mistake错误地；by accident偶然地；根据句意语境，可知by mistake符合句意，故选B。