Dear teacher I don't want to have this class.Because I'm not have enough ability to complate my ourse content and this course content at the same time . I feel very sorry . But I really haven't got enough energy . Please promised to my request . Thank you . your student
Dear Sir/Madam,I am sorry to tell you that I have to quit your classes to avoid scheduel confrontation, and I hope you can understand. I have enjoyed the time at your class, thanks for everything.Yours's sincerely,XX(此处写你的名字)
