完整原文
Dear Mom and Dad, I need to tell you I will be home late today. My teacher asked us to stay after school for extra math practice, and we have a test tomorrow. I will finish my homework at the library and take the 6 p.m. bus home. Please don't worry about me, and save a portion of dinner in the refrigerator. See you at home around 7 p.m. Love, [Your Name]