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Iusuallysleepwiththewindowopen

練習題2.2W

問題詳情:

Iusuallysleepwiththewindowopen

I usually sleep with the window open _____ it’s really cold.

A. if                      B. because           C. so                   D. unless

【回答】

D

知識點:連詞

題型:選擇題

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