问题补充：
---How much do you spend the beautiful jeans?
---They me 80 yuan.
A. buying; pay
B. to buy; take
C. buy; spend
D. buying; cost
答案：
A. buying; pay
B. to buy; take
C. buy; spend
(答案→)D. buying; cost
解析：买这件漂亮的牛仔裤你花了多少钱？它们花了我80元。Spend+钱+（in）doing sth.；做某事花费某人多少钱；主语是物时，要用cost。所以选D。
