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Everyone here will thank the firefighter for the things they have done to prevent fires______the environment safer.
A.makeB.to makingC.to makeD.from making
C
考察非谓语动词,根据句意可知该处作目的状语,
意为,这里的每个人都将要感谢 消防员,因为他们做了很多事情来阻止大火,为了让周围的环境安全。
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