Of all the sports shoes. John bought pair. Then he had some money for socks.A. a cheaper

问题补充：

Of all the sports shoes. John bought pair. Then he had some money for socks.

A. a cheaper

B. the most wonderful

C. the least expensive

D. an expensive

答案：

A. a cheaper

B. the most wonderful

(答案→)C. the least expensive

D. an expensive

解析：根据句意“约翰买了所有运动鞋中最便宜的一双。以便他有钱买袜子。”故选最高级C。