i think walking is good for my health walking为什么加ing

i think walking is good for my health walking为什么加ing I think walking is good for our health 翻译 I think walking and running is good for our health 改错 Walking is good exercise,为什么walk要加ing? I think drinking milk is good for our health中为什么drink要加ing请说 Walking is good中Walk为什么要加ing呢还有就是It is a fine day for walkin Walk is good for our health.还是Walking? Walking in a_____way is good for our health. walking is good () for me 为什么Eating fruit is good for my health这里要加ing,what's on the o walking in the park为什么加ing walking is good exercise.为什么不加a?