Apples are usually sold by weight, and eggs are sometimes sold by dozen.A. the; theB. 不填;

Apples are usually sold by weight, and eggs are sometimes sold by dozen.
A. the; the
B. 不填; a
C. 不填; the
D. the; a

A. the; theB. 不填; a(答案→)C. 不填; theD. the; a解析：可联系答案网客服索取此答案。

我也是这个答案