问题补充:
At present, more and more people prefer in the countryside because there is pollution in the city.
A. living, more
B. to live, less
C. living, less
D. to live, more
答案:
A. living, more
B. to live, less
C. living, less
(答案→)D. to live, more
解析:固定结构prefer to do sth,更喜欢做某事,根据句意因为有更多的污染,故用more.