— yogurt do we need?—Two cups.A. How manyB. How aboutC. How muchD. How long

问题补充：

— yogurt do we need?

—Two cups.

A. How many

B. How about

C. How much

D. How long

答案：

A. How many

B. How about

(答案→)C. How much

D. How long

解析：根据答语可知询问的是数量，因yogurt是不可数名词，故用how much来提问，选择C。