Dear Bob, Thanks for your letter.I'm glad to tell you something about my summer vacation. I had many activities during the vacation.I read books in the library every day for at least one hour.I enjoyed reading there.I also exercised every day.I sometimes went swimming and sometimes played tennis with my friend.I watched TV about twice a week.Only forty minutes for each time.Because it was bad for my eyes. I think I had a life.Because I often did exercise and I watched TV just for a while. How about you?What did you usually do during your summer vacation? Look forward to your reply. Yours, Li Hua