Question

【题目】—Why was he late for school yesterday?

—He overslept. By the time he got to the bus stop, the bus _____ already _____.

A. was, leaving B. has, left C. would, leave D. had, left

Answer 1

【答案】D

【解析】

试题句意：昨天他为什么迟到了？——他睡过头了。他到达公交车站时，公交车已经开走了。结合语境可知下文描述的是一直持续到过去某时的动作，故用过去完成时态，选B。