【答案解析】[范文] Dear Teacher, I'm sorry I can't go to school these days because I caught a cold after visiting my grandmother far away last weekend. What's worse, I got a fever in Monday morning. So I have to stay at home. But now I'm a little better and I'll go back to school the day after tomorrow if possible. Yours, Lily [名师解析] 该信写出了题目所列要求，第一道歉，说明自己得了感冒，紧接着说更糟糕的是周一还在发烧。不过，现在有所好转，可能后天就能上学。该信用了许多习惯表达法，如catch a cold, far away, get a fever, go back to school, the day after tomorrow, if possible等，使信件更加流畅，地道。