Dear (imię koleżanki)!
I am writing in regard to our school trip. I have a great idea. I think we could make it more eco-friendly.
Firstly, we could recycle our trash during the trip. If we recycled, instead of mixing all of our waste together, it would be much more eco-friendly.
Secondly, we should be careful with food portions. So much food is going to waste if we are not careful with how much we put on our plates.
I would also like to know your ideas. Can you tell me about your experience with travelling? It would be very helpful.
Love,
(Twoje imię)