1)

1. Kate is not a student (Катя не студентка).

2. All my pens are not new (Все мои ручки старые)

3. Yout art was not very interesting yesterday (вчера Ваш рисунок не был самым интересным)

4. Tom is not a schoolboy (Том не школьник)

2)

1. My favorite subject at school is IT

2. My school is old

3. I was in Sochi 20 days ago.

4. Oleg was in the library

5. The schoolbags are nice

6. It is very hot today.