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Measures must be taken to prevent pollution ____ happily.

A．from we live B．for us to live
C．us living D．from our living

B

解析試題分析： 考查動詞短語。句意：對于我們來說，應(yīng)該采取措施來阻止污染 讓我們活得更快樂些。Prevent sb from doing 阻止某人做某事，但不符合句意，To do 表目的，故選B項。
考點(diǎn) : 考查動詞短語

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