-- teaspoons of salt do we need?Two.A. HowB. How muchC. How manyD. How many of

问题补充：

-- teaspoons of salt 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：How如何，怎样；How much多少，用来提问不可数的量；How many How many多少个，提问复数名词；How many of无此用法。根据下文，两个。可知上文问的是，我们需要几勺盐？故选C。