Dear Alice,
Thanks for your letter. It was great to hear from you. Sorry, I haven't answered before, because I was busy with my schoolwork. In your letter you ask me about ecological problems in my country.
Well, I think that there are a lot of ecological problems in this country, but as for me, air and water pollution are the most serious ones. There are a lot of youth organizations protecting nature, so, I think that teenagers can join these groups and start making their own cities cleaner. I prefer living in a big city, even if it's "dirty", because in a big city I have more oppotunities to make my future career.
It's all for now. Write to me back as soon as possible.
Best wishes,
Roman
Это предложение никак по другому не сократишь. Но если в предыдущем указать то что речь идёт о кузине и тебе то можно сказать в последующем так: "We're nice"