问题补充：
--How much did you for the new ipad?
--It me 5000 yuan.
A. spend, took
B. cost, paid
C. pay, cost
D. paid, cost
答案：
A. spend, took
B. cost, paid
(答案→)C. pay, cost
D. paid, cost
解析：句意：这个新的ipad你花了多少钱？---它花了我500元。Pay for固定词组付款，cost是物作主语表示花费某人多少钱。结合句意，故选C
