People in America eat much .A. potatoesB. onionsC. beefD. hamburgers

问题补充：

People in America eat much .

A. potatoes

B. onions

C. beef

D. hamburgers

答案：

A. potatoes

B. onions

(答案→)C. beef

D. hamburgers

解析：much用来修饰不可数名词，四个选项中只有beef是不可数名词。