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【题目】He made up his mind to devote his life________ pollution ________happily.
A.to prevent; from living
B.to prevent; to live
C.to preventing; from living
D.to preventing; to live

【答案】D
【解析】句意:为了过上幸福的生活,他下定决心一生致力于防止污染。第一空的to,用来构成固定搭配devote ... to ... 把……奉献给……此处to是介词。所以prevent要用ing形式,第二空to live 不定式作目的状语,注意:此处不是prevent... (from) doing sth 阻止……作某事。选D。

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