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—Whatwereyoudoingwhenwewereplayingbasketballyesterdayaf...

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問題詳情:

—Whatwereyoudoingwhenwewereplayingbasketballyesterdayaf...

—What were you doing when we were playing basketball yesterday afternoon?

        I ______ the classroom.        A. was cleaning    B. have cleaned    C. will clean   D. clean

【回答】

A

知識點:動詞時態

題型:選擇題

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