Thank you for your last letter. I'm very sorry to hear that you are in hospital. I'm really worried about you and I hope that my letter will cheer you up.
I was thinking about sending you a few good books to the hospital so that you won't be bored very much. There are a few things that you can do in hospital. Firstly, you should find someone to talk to. It is very easy to find friends in hospital, maybe in another room? Secondly, you should listen to music because it makes you feel relaxed and less stressed. In addition, you must think positively - that is the only way to get better.
You asked me about my school trip to Warsaw. I had a really good time and we did a lot of sightseeing. I'll show you some pictures when you get better. Unfortunately, the trip didn't last long and I had to come back to school. Imagine that on the first day I found out that my favourite English teacher couldn't learn us anymore because she was moving to another city! I still don't know who is going to teach us English.
I wish you all the best and I hope that you will get better quickly. I'll try to visit you in hospital as soon as it is possible.