1. My father is a worker.
My father isn't a worker.
My father is a worker, isn't he?
Is my father a worker?
2. He is an engineer now.
He isn't an engineer now.
He is an engineer now, isn't he?
Is he an engineer now?
3. These children are little.
These children aren't little.
These children are little, aren't they?
Are these children little?
4. You are my best friend.
You aren't my best friend.
You are my best friend, aren't you?
Who is my best friend?
5.Your daughter is a pupil.
Your daughter isn't a pupil.
Who is a pupil?
Your daughter is a pupil, isn't she?
6. I am a student.
I am not a student.
Who is a student?
Am I a student?
7. They are good boys.
They aren't good boys.
They are good boys, aren't they?
Are they good boys?
8. Our mother is a teacher.
Our mother isn't a teacher.
Our mother is a teacher, isn't she?
Is our mother a teacher?