Fill in the right form of "be".What is David's favourite subject?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 favourite subject ___ Maths. My Math teacher ___ very nice!What about your school this year?Best wishes,Sasha