This is one of dresses at the yard sale. You should get it.A. cheapB. too cheap C. cheape

问题补充：

This is one of dresses at the yard sale. You should get it.

A. cheap

B. too cheap

C. cheaper

D. the cheapest

答案：

A. cheap

B. too cheap

C. cheaper

(答案→)D. the cheapest

解析：考察最高级。句意：这是这里出售的最便宜的连衣裙之一，结合语境可知本句表示在多个中进行对比，故用形容词的最高级，故选D