Dear teacher:

Today, I write this critical letter to you with 120,000 guilt and 120,000 regret, to show you my determination to commit this bad behavior. As early as when I first entered this class, the school repeatedly stressed that all students should take exams seriously. At that time, the teacher's instructions over and over again were still in my ears, and my serious expression was still in my eyes. I was deeply shocked and deeply realized the importance of this matter, so I repeatedly told myself to take this matter as a top priority and not to disappoint the teacher's painstaking efforts.