—Has David finished his project yet?
—I guess not. He on it at lunch time. Do you want me to confirm(确认) it?
- A.is working
- B.was working
- C.has worked
- D.had worked
答案
正确答案：B
知识点：动词时态：过去进行时
句意为“——David完成他的项目了吗？——我猜没有。午饭的时候他还在工作。你想让我去确认一下吗”。表示过去某个时刻正在进行的动作，要用过去进行时，答案为B。
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