The seller would sell the skirt for 50 dollars, but the customer ________ only half the price, and finally they agreed ________ the price．

A.supplied; on

B.charged; on

C.offered; with

D.offered; on

答案及解析： D

解析：

charge“要价”，不是顾客的所为，排除B项；supply“供应”；agree with意为“同意某人的意见”；agree on意为“意见一致”。