Помогите расставить диалог в правильном порядке

1)Err No I dont but i can explain why
2)Oh dear.What is the excuse
3)Im very busy this week because the football team is training every night
4)I undestand but this year is very important to your future
5)i know sir but the final is on Friday
6)Very well you can give your homework next week
7)thank you sir.goodbye