Ребят , помогите !Fill in : 'm, 's, 're, isn't, aren't

Dear Anya.
Hi! How are you? ..... fine. ...... at my new school! It .... great but it .... very big. I like my classmates. They .... very frindly! I .... in class 3B. This year I'm doing maths, history and geography. The lessons ..... very difficult so I have a lot of free time. My favourite subject .... maths. My maths teacher .... very nice! What about your school this year?
Love ,
Mendy