Choose the right forms of the verb to be

1. Her name
   [am|is|are]
   Mary.
2. Our new teacher
   [am|is|are] nice and kind.
3. My friends
   [am|is|are] the best friends in the world.
4. Your jokes
   [am not|is not|are not]
   funny.
5. My backpack
   [am|is|are] heavy.
6. I
   [am|is|are] a manager in the hospital.
7. We
   [am|is|are] pupils.