It is no use to persuade him smoking because he has been addicted to it since he was
young.
A. trying, to quit
B. to try, to quit
C. to try, quit
D. trying, quit
网友回答
(答案→)A. trying, to quit
B. to try, to quit
C. to try, quit
D. trying, quit
解析：本题考查短语的固定搭配。It is no use doing做某事没有用；persuade sb. to do劝服某人做某事，故选A。