I paid him 300 yuan for the sneakersOh he charged you too much．You them with ha

问题补充：

--- I paid him 300 yuan for the sneakers．

--- Oh, he charged you too much．You them with half the money．

A. could have bought

B. needn’t have bought

C. must have bought

D. wouldn’t have bought

答案：

(答案→)A. could have bought

B. needn’t have bought

C. must have bought

D. wouldn’t have bought

解析：词义辨析。could have bought本能够买；．needn’t have bought没有必要买；

must have bought肯定买了；wouldn’t have bought不会买；这些零食我付了他300元。他要的太多了。你本可以用一半钱来买。所以选A。