1)I am in class now.
I am not in class now.
2)We are in America
We aren't in America.
3)Our teacher is from Uralsk.
Our teacher isn't from Uralsk.
4)My friends are nice.
My friends aren't nice.
5)My notebook is on my desk.
My notebook isn't on my desk.
6)Books are expensive.
Books aren't expensive.
7)I am fourteen years old.
I am not fourteen years old.
8)Harry Potter DVDs are boring.
Harry Potters DVDs aren't boring.