题目内容：

During the last past 15years,the most important lesson I had learned is that being a big brother is not easy for my own brother.My brother is four years old than me.As a child, I often tried to following him and his friends.I was the little sister whom always wanted to be included in everything, even when they were playing the basketball.My brother got angry for me sometimes and left the house without me.Therefore,later he regretted having done that.Now,my brother lives abroad because of  his job , he always calls me to ask how everything is going with him.In a word, having a brother is a wonderfully thing.