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Sallytookaphotoofherfriendswhilethey

練習題2.69W

問題詳情:

Sallytookaphotoofherfriendswhilethey

Sally took a photo of her friends while they _________ computer games.

A. play                 B. are playing              C. have played            D. were playing

【回答】

D

知識點:動詞時態

題型:選擇題

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