because walking is a good way to exercise.

_a bike is a good way to exercise Walking up and down the stairs is a good kind of exercise to walking is good exercise.为什么不加a? walking after the meals is a good way to relax.为什么后面要用relax的 Doing morning _____(exercises\exercise)is a good way to keep 以Exercise is a good way to keep healthy为题目 英语作文：Doing exercise is a good way to keep healhty 英语翻译老师给的答案,taking more exercise is a good way to keep health Hiking is a good way to exercise. Do you like it? Walking is good exercise.同意句 Exercise is a doorway to good health 请你以“Doing exercise is a good way to keep healthy”为题,写一篇70词左右