按照以下内容提示，写一篇短文介绍你的一个好朋友，至少50词。首句已经给出不计入总词数。
内容包括：1）姓名：John Smith
2）年龄：14岁
3）外貌、性格特征
4）生日：十月六日
5）家庭成员：爷爷奶奶，爸爸妈妈，一个妹妹
6）最喜爱的运动、学习科目及其原因
I have a good friend.
One possible version：
I have a good friend. His name is John Smith. He is 14. He is very tall. He is kind and he likes helping others. His birthday is on October 6th. There are six people in his family. They are his parents, his grand
