If you want to be healthier you must eat fast food I think.A. moreB. muchC. fewerD. les

问题补充：

If you want to be healthier, you must eat fast food, I think.

A. more

B. much

C. fewer

D. less

答案：

A. more

B. much

C. fewer

(答案→)D. less

解析：more更多的；much许多，大量；fewer更少的，修饰可数名词复数；less更少的，修饰不可数名词。句意：如果你想要更健康，你必须少吃快餐，我认为。本题中fast food表示抽象含义，故选Ｄ。