healthy you should take more exercise and eat more healthily .A.Keep B.To keep C.Keepng

问题补充：

healthy，you should take more exercise and eat more healthily .

A.Keep B.To keep C.Keepng

答案：

解析：句意：为了保持健康，你应该做更多的运动吃的更健康。动词不定式可以表示目的。故选B。