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Don’t leave the water ____ while you brush your teeth.

A. run           B. running            C. being run     D. to run

B


解析:

非谓语动词作宾语补足语时,选项A、D表示将来可能发生的动作;B表示宾语持续性动作,根据句意选B,表示水不停地流出。

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