Fill in the right form of 'be' and answer the question.

Dear David,
Hi! How are you? I ... fine. I ... at my new school. It ... far from my home so I can walk there. It ... very big and it ... great. I like my classmates. They ... very friendly.

I ... in Class 5B. We have five lessons every day. The lessons ... very difficult so I have a lot of free time. My favoutite subject ... Maths. My Math teacher ... very nice!
What about your school this year?
Best wishes,
Sasha

What is David's favourite subject? ...