— are the pants? —They are 180 yuan.A. How manyB. WhoseC. WhereD. How much

问题补充：

— are the pants? —They are 180 yuan.

A. How many

B. Whose

C. Where

D. How much

答案：

A. How many

B. Whose

C. Where

(答案→)D. How much

解析：句意：这裤多少钱？180元。How many多少，对可数名词的量提问。Whose谁的，对物主提问。Where哪里，对地点提问。How much多少，对不可数名词的量提问。对物品的价钱提问常用疑问短语how much。所以选D。