как определить валентность

Срочно решите!Вставляйте на место пропусков 'm, 's, 're, isn't, aren't

Hi! How are you? I__ fine. I_______ at my new school! It___ great but it_______ very big. I like my classmates. They___ very friendly! I _____ in class 3B. This year I'm doing maths, history and geogtaphy. the lessons ________ very difficult so I have a lot of free maths teacher ______ very nice!

What about your school this year?

Love,

Wendy

затранскрибуруйте слова:догадкой,всё,чтобы,больного

срочно плииз