That's very nice you study at a new shcool ! The best way to make new friends is to be gentle and friendly.
People like interesting things that's way you can bring smth new and fascinating for them. For example. some popular books to read together , to tell them real cool stories from your backgraund, Don't be very praud of yourself, try to be helpful and easygoing.
You can also ask your schoolmates about themseves about teachers, sports and food at school. Don' be very shy and your new schoolmates woud like to make friends with you.
2) pour, floats
3) polluted, wold die
4) visits, will find
5) been, wouldn’t have existed