请以保持健康为主题，从以下几方面写一篇80个单词左右的短文。
1.要有健康的饮食习惯。
2.多做运动。
3.保持快乐的心情。
4.不要抽烟喝酒。
参考单词或短语：  vegetables, fruit,   playing sports ,
be good for,  happiness,   important,   smoke,  drink
Health is very important for us.what should we do to keep healthy?
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