---Cathy are you going to buy a flat in Shanghai?-You must be joking. I can’t one the

问题补充：

---Cathy, are you going to buy a flat in Shanghai?

---You must be joking. I can’t one there.

A. spend

B. pay

C. afford

D. cost

答案：

A. spend

B. pay

(答案→)C. afford

D. cost

解析：spend花费；pay为……付款，跟宾语时和for连用；afford买得起；cost

花费，主语是物。句意：-Cathy,你想在上海买房吗？别开玩笑，我在那买不起房子。所以选C。