问题补充:
--Do you know the cost of buying a house in Shanghai is much higher than in Tibet?
---Of course, I know. It’s impossible for me to buy there.
A. that; it
B. one; that
C. that; one
D. it; one
答案:
A. that; it
B. one; that
(答案→)C. that; one
D. it; one
解析:考查代词用法。第一空这里用 that 替代的是 前半句中的主语the cost of buying a house in Shanghai,第二空用one来泛指。