-- cups of yogurt do we need?--Two.A. HowB. How muchC. How manyD. How many of

问题补充：

-- cups of yogurt do we need?

--Two.

A. How

B. How much

C. How many

D. How many of

答案：

A. How

B. How much

(答案→)C. How many

D. How many of

解析：yogurt为不可数名词，表示数量时可用… cups of yogurt，cup为可数名词，询问“多少”时要用 how many。