根据提供的信息填空。

“我的同学叫约翰，我们年龄相同。但是我和他比起来，我的头发比他长、个子比他矮、比他瘦、比他内向。并且他是班里成绩最好的。”使短文内容完整、通顺。

I have a classmate, John. We have the same age. But I have hair than him. He is than me. I am than him. He is outgoing than me. And he has best grades（分数）in our class.