【題目】—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

【答案】B

【解析】

試題分析：句意：--大衛(wèi)還沒有完成作業(yè)嗎?—我想沒有完成吧，他在午飯時(shí)間還在工作，你想要我證實(shí)一下嗎?根據(jù)I guess not. He on it at lunchtime可知他在午飯的時(shí)間正在做，故用過去進(jìn)行時(shí)。故選B。

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