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 --Whatwereyoudoingat9o’clocklastSundaymorning?        ...

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問題詳情:

 --Whatwereyoudoingat9o’clocklastSundaymorning?        ...

 --What were you doing at 9 o’clock last Sunday morning?

         --I ________.

        A. did my homework               B. am doing my homework

        C. do my homework                D. was doing my homework

【回答】

D

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