【正确答案】Dear Jimmy, I am writing this letter to give my advice on your overstudy, for this habit will have a long-term bad influence on your health. My suggestions are as follows. To begin with, you shouldn't study late at night. It may do harm to your body. What's more, you'd better do some exercises every day to keep healthy. Last but not least, I hope you can communicate with your teachers to improve your learning efficiency. Study is important, but health is as important as study. The meaning of study and life can only be guaranteed by a good health. I sincerely hope you can adopt my suggestions. Yours sincerely, Li Ming