Dear XX Sincerely sorry for our immature behavior today.We have realized our mistake from our bottom of our hearts.The mistake is big and bad.It not only brings bad infulence to our class climate but also disturbs our study.To the great regret,we hurt our distinguished teacher who holds promising hope for us. We make sure this kind of matter will not be happened in the future.Please accept our faithful apology!looking forward to your kind forgiveness. Sorry again.