It is no use to persuade him smoking because he has been addicted to it since he wasyoun

问题补充：

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

答案：

(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。