格式自己套
Dear Miss Chen
I really appreciate that you have spend time to visit me out of your busy schedule. Your visit means a lot me because it shows that you really care about me and i would thank you once more for this. In addition, the card you wrote for me has grand me much energy. I believe I can be recovered very soon.
Right now I can feel my wound is covering up, the condition is getting better day by day, I think I can be totally recovered very soon. After recovery, I will spend twice the time as before to catch up with the lessons and works that were left behind, so you do not have to worry about my result, I will work hard.
In the end, i really appreciate your visit, wish you a happy day.