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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