I'm moving to the countryside because the air there is much fresher than in the

I'm moving to the countryside because the air there is much fresher than _______ in the city.

A. ones   B. one     C. that     D. those?

试题答案

C　

解析:

该题考查代词的用法。that 代替前边出现过的词,应该有后置定语,即:比较的对象是the air there和the air in the city。that 代替前边出现过的the air。