First of all, Mr. xx. I feel very sorry and guilty about my behavior this time. The library should be a quiet reading place. It is inappropriate for me to play and chat with other students. Afterwards, after being deeply educated by you, I realized my mistake. I feel very guilty. I shouldn't talk to my classmates in the library, which affects other students' reading. Here, I promise that I will correct my mistake, and if there is no next time, I will bear your punishment. Students-

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