How hours do you sleep a day?Well about eight hours. But how sleep do we studen

问题补充：

--- How hours do you sleep a day?

--- Well, about eight hours. But how sleep do we students really need?

A. many; many

B. much; much

C. much; many

D. many; much

答案：

A. many; many

B. much; much

C. much; many

(答案→)D. many; much

解析：根据hours可知，前面应该用many，因为many修饰可数名词的复数；根据sleep是不可数名词，故用much，因为much修饰不可数名词。所以本题选D。