Dear Sir,I am very sorry that I was absent for many classes that I should attend, and if you could, please take my humble apology for my poor performance in school attendance.I was frequently late or absent from classes partly because of my schedule and unhealthy lifestyle. As you may know, I am a fan of computer games, and in recent months, I have deeply attracted by a new computer game, which proved enormously interesting and time-consuming. I often play the game for hours at night, which makes it very difficult for me to get up timely for the morning classes. For many times, I really wanted to delete the game from my computer so that I can focus on my study. But for many time as well, I failed to resist the temptation of the game. It is my fault and I am not going to find excuse.I am deeply shamed with what I have done in the last months, and please be kindly noted that I have deleted the game from computer so that I can re-arrange my agenda.Thanks for your reminder, and I am willing to spend additional times on my study to keep up with my classmates.Yours Faithfully XXXXXXXX