Question

【题目】—I often have hamburgers for lunch.

—You'd better not.It's a bad habit ________ too much junk food(垃圾食品)．

A. eatB. to eat

C. eatingD. to eating

Answer 1

【答案】B

【解析】

句意：--我经常午饭吃汉堡。--你最好不要这样。吃太多垃圾食品是一个不好的习惯。根据句意可知这里“吃太多垃圾食品” 作句子的主语，句首it是形式主语，故后面要用to do 不定式作真正的主语，故选B。