Type negative forms of these sentences

I am not a pupil. I'm a student.

1. We
   [ ]
   in France. We are in Russia.
2. She
   [ ] a doctor. She works as a teacher.
3. I
   [ ] nine. I'm twelve.
4. Mary
   [ ] Polish. She was born in Russia.
5. Sarah and Mary
   [ ] sisters. They're just friends.