Question

【题目】— Has David finished his project yet?

— I guess not. He ________ on it at lunchtime. Do you want me to confirm it?

A. is working B. was working

C. has worked D. had worked

Answer 1

【答案】B

【解析】

试题分析：句意：--大卫还没有完成作业吗?—我想没有完成吧，他在午饭时间还在工作，你想要我证实一下吗?根据I guess not. He on it at lunchtime可知他在午饭的时间正在做，故用过去进行时。故选B。