Question

It is no use ________ him to give up smoking． He won’t listen!

A. to persuade
B. trying to persuade
C. persuading
D. try to persuade

Answer 1

答案B
本题考查非谓语动词。It’s no use doing sth.为固定用法，表示“做某事没用/只是白费力气”，由此可以排除A和D；persuade sb. to do sth.意为“说服某人做某事”，强调劝说成功。如果劝说不一定成功，可用词组try to persuade sb. to do sth. 根据句意“劝说他戒烟是没用的”可知不一定成功，故答案为B项。