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Yangbing who is my best friend, and he is ten years old and study in middle school,we are often swiming on sunday,study english with him at his home on starday.he has a brother and his name is yangyong.his brother is my best friend too. we alway go to shcool together on monday to firday,and doing our homewoke after school,one day ,i was lend a book to his brother,but his brother was not give me the book so casued we are