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 —Whatwereyoudoingatnineo’clockyesterdayevening?—I     ...

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 —Whatwereyoudoingatnineo’clockyesterdayevening?—I     ...

 —What were you doing at nine o’clock yesterday evening?

—I        homework at home.

A. did    B. do       C. am doing  D. was doing

【回答】

D

知识点:动词时态

题型:选择题

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