_______ a good_______habit is very important for us.
A.Keep,eaten B.Keeping,eating C.Keeping,ate D.To keep,eaten
答案：B.Keeping,eating
第一空用不定式和动名词作主语都可以,但是第二空只可以用eating作定语,表示饮食习惯.
翻译：保持良好的饮食习惯对我们来说是很重要的.