— are those pants?—They are 100 yuan.A. How manyB. How muchC. WhatD. How

问题补充：

— are those pants?

—They are 100 yuan.

A. How many

B. How much

C. What

D. How

答案：

A. How many

(答案→)B. How much

C. What

D. How

解析：句意：——那些短裤多少钱？——他们是100元。A. How many多少，对数量提问；B. How much 多少钱，对价格提问；C. What 什么，对内容提问；D. How如何，对方式提问。根据They are 100 yuan.可知此处是对价钱的提问。故选B。