—I often have hamburgers for lunch. —You’d better not. It’s bad for you too much junk foo

问题补充：

—I often have hamburgers for lunch.

—You’d better not. It’s bad for you too much junk food.

A. eat

B. ate

C. eating

D. to eat

答案：

A. eat

B. ate

C. eating

(答案→)D. to eat

解析：句意：我经常午饭吃汉堡包。你最好不要，吃太多的垃圾食品对你不好。it作为形式主语，后面的不定式作为真正的主语，故选D