This is my first time to write a letter of guarantee, I promise, this must be my last time to write a letter of guarantee! This is a very profound examination, and I am ashamed of the mistakes I made this time. I shouldn't be absent-minded in class. I'm sorry. I hope the teacher can forgive me. I promise I won't make similar mistakes again.
In fact, I couldn't resist the temptation of other students in class and said a few words, but the teacher didn't criticize me. I thought: You should know what I said, but you didn't criticize me until you knew I knew my mistake. That's because you believe me! Here, I don't want to hide my mistake. I will try my best to correct my mistake. Please believe me!
However, people always make mistakes. Of course, I also know that this cannot be used as an excuse. We should try our best to avoid such mistakes. I hope the teacher can believe my repentance. "People make mistakes and horses trip." My bad behavior is not to challenge the teacher's discipline. This is definitely a mistake. You are absolutely right. Students should do their work well. I feel ashamed. As a student you attach great importance to, how could this happen?
Originally, I had to concentrate on listening in class and delve into problems after class, but I wasted precious time in class! Without a deep sense of learning, I really realized my mistakes when I wrote the letter of guarantee. Therefore, I will listen to my teacher in the future, fully understand the teacher's requirements for us, and ensure that similar things will not happen again. I hope the teacher can give me a chance to turn over a new leaf. Teachers want us to be the pillars of society. Through this incident, I deeply felt the teacher's hatred for us, which made me feel very guilty. I thank my teacher for his education.
I sincerely accept criticism and am willing to accept it. For all this, I will further summarize and deeply reflect. I promise to study hard and make progress every day! I implore the teacher to believe that I can learn from my mistakes and correct them.