My name is Jim. I am a student. At school, I have a good friend. His name is Mike. He is tall. He has short hair. We are classmates, too. We go to school at  7:00  o'clock. We go home at  5:00. It's  3:15  now. It's time to play games. Let's go to the playground. We play football with some boys. Jim and Mike are               。

A：friends

B：father and son

C：teachers