1) 1-is, 2-am,3-was,4-has,5-have,6-are,8-are
2) favorite subject, foreign language, three-room flat, interesting book, large family
3) 1-4, 2-5, 3-2, 4-1, 5-3
4) Are we first year students? Does my friend have a dog? Are there two windows in this room?
We are not first year students. My friend doesn't have a dog. There are not two windows in this room.
5) colors
6) chair