- Has David finished his project yet?- I guess not. He ___________ on it at lunch time. Do you want me to confirm it?

题型：单选题题类：常考题难易度：普通

湖北省2017届九年级英语专题练习：现在进行时和过去进行时

- Has David finished his project yet?

- I guess not. He ___________ on it at lunch time. Do you want me to confirm it?

A、is working B、was working C、has worked D、had worked

举一反三

-- They .

—Sorry, I{#blank#}1{#/blank#}(prepare) for the coming exam at that time.

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