问题
选择题
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
答案
C
题目分析：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。