Question

Smoking, which may be ________ fun for some people, is ________ cause of discomfort for the people around him.

A．/; a

B．a; a

C．a; /

D．a; the

Answer 1

A

考查冠词的用法，fun为不可数名词，故前不加冠词，第二空是泛指，一个起因，句意：吸烟对某些人可能会有趣，但对他周围的人来说是一种不舒服的起因。故选A。