He has made up his mind to devote his life pollution happily.
A. to prevent; to live
B. to prevent; from living
C. to preventing; to live
D. to preventing; from living
网友回答
A. to prevent; to live
B. to prevent; from living
(答案→)C. to preventing; to live
D. to preventing; from living
解析：考查词组和不定式做目的状语：句意：他决定为了生活的幸福一生都致力于阻止污染。Devote sth to doing致力于做，第二空填不定式，因为这是目的状语，不能理解成prevent sb from doing。选C。