Question

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?

Answer 1

C　

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。