Составьте текст по английскому небольшой по временам present simple, present progressive, present perfect

Tom goes to school five days a week. Lessons start at half past eight. It is twenty past eight. Tom is in the classroom now. He is getting prepared for the first lesson and chatting with his classmates. Tom's best friend Kevin is discussing their homework. He hasn't done the last exercise. Tom has, but he isn't going to explain how, because the lesson starts in a minute.