Question

【题目】At the time of the earthquake Jeff was still in his office. He to finish a project before he left for the day.

A. has tried B. had tried

C. has been trying D. had been trying

Answer 1

【答案】D

【解析】

句意：地震发生时，杰夫还在他的办公室里。在他离开之前，他一直在努力完成一个项目。考查动词时态辨析题。before he left.是发生在过去的动作；根据句意语境，可知在发生地震时他依然在办公室努力完成这一计划，需用过去完成进行时，故选D。