Смотри, это пример письма по формату ЕГЭ. Обязательно должен присутствовать абзац, где ты задаешь встречные вопросы по указанной теме, но так как у тебя тема для вопросов не указана, я задала наобум.
(Город)
Russia
8th July, 2015
Dear Dan,
Thanks for writing to me. Sorry, I haven't been in touch for so long.
As for your questions about my reading preferences, well, you know, I'm keen on horror stories because they're usually breathtaking. In my view, physics has always been a prior field of science and I guess it will stay vital in the future as the technological progress mostly depends on this science. However, I believe people won't take activities in 50 years as they're getting lazier and lazier, so drawing, photographing and singing are likely to become the only people's hobbies.
That's exciting that your brother's entered the university. How far is it from your home? What subjects can be studied there? How many students are going to this university?
Sorry, I must go now. My sister wants me to play with her.
Hope to hear from you soon.
Yours,
(твоё имя)