Who's she?
She's a cook.
Is she a cook?
No, she isn't. She's a nurse.
Is she a farmer?
Yes, she is.
Who's she?
She's a student.
Who's she?
She's a doctor.
Is she a taxi driver?
Yes, he is.
Who's he?
He's a teacher.
Is he a taxi driver?
No, isn't . He's a police officer.
Who are they?
They're students.
Who are they?
They're office workers.
Who are they?
They're dentists.
Who are they?
They're salesclerks.
Are they teachers?
No, they aren't. They're firefighters.
Are they pilots?
Yes, they are.
Are they teachers?
Yes, they are.
Are they office workers?
No, they aren't. They're engineers.
