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。