Dear Bill,
Thanks for you last letter.
I am staying at London now. I arrived here last Sunday. I am living at home of my pen-friend Mark. It is my first trip without parent.
London is so beautiful city. I have seen many places of interest. Now I am staying neae Big Ben.
The weather is fine. So, I am goining to go for a walk this evening. Mark said, that he know many unknown, but very beautiful places in London. It is my last day in London, so I hope I'll have a good time.
Tomorrow I am going to leave London and return to my home.
Have you ever been to London? What where you doing there? What are you going to do tomorrow?
I am looking forward to yoir answer.
Best wishes,
(Your name).