The woman sold the eggs seven dollars and they were sold half price. A. with at B. for

问题补充：

The woman sold the eggs seven dollars and they were sold half price.

A. with, at

B. for, at

C. at, in

D. by, on

答案：

A. with, at

B. for, at

C. at, in

D. by, on

解析：因为以多少钱买卖用for；但与price连用，表示以某种价格买卖时，用at。