I make many friends in school. But I have only one best friend. Her name is Susan. She is my classmate, too. Susan is a beautiful and lovely girl. She is taller than me. We often stay together. People say we like sisters. Actually, I regard her as my sister. She works very hard on her study. We often study together and help each other. Her favorite subject is math. She thinks math is interesting and challengeable. She is good at math and our math teacher likes her very much. Besides, she is popular in my class, because she is outgoing and attractive.