Hi ......
I am ..., the exchange student who is going to be a member of you/ who is chosen by you.
I was really pleasantly surprised when I was told that I am going to live in A for 10 months. A is well known in the world for its beautiful scenery, and I heard from a lot of friends that people there are very hospitable. Thousands of people are looking forward to visit this fantastic place. Lucky for me to chosen by you. I have never dreamed of visiting A as an exchange student and I am so excited about this unusual trip. Thank you so much for giving me this chance.
This would be the first time for me to go to America, which makes me a little nervous. But I know that I am going to get used to new life in America and get used to being a member of you.
I am going to apply for my visa tomorrow and then I could decide on the starting off date right after I get the visa, which means, I am coming soon!
I am looking forward to meet you.
Sincerely,
Name