Many people enjoy outdoor games very much, because outdoor games can help them keep healthy.

很多人非常喜欢户外活动，因为户外活动可以帮助他们保持健康。

Its very important to keep healthy.

保持健康是非常重要的。

But how to keep healthy?

可是如何保持健康呢？

What do I have to do to keep healthy?

要保持身体健康我必须得做些什么？

I hope to keep healthy.

我希望保持健康。