Вот тебе письмо:
Thanks for your letter, it's always fine to receive letters from you.
I think, 11th June would be better, wouldn't it?
There will be about two hundreds students of different ages with very different interests. But in our school and as for me basketball is the most popular sport.
It would be beautiful if you'll speak about making a goals and so on, a kind of motivation, you know.
Will you come alone? What kind of speech will you have? Should I prepare something for you?
With respect to you, *name*
Дату там и город свой сам(-а) допиши, заодно и слов до нужного объёма добьешь