Who are they?
They're pilots.
Who are they?
They're salesclerks.
Who are they?
They're office workers.
Who are they?
They're engineers.
Who are they?
They're dentists.
Who are they?
They're dentists.
Who are they?
They're teachers.
Who are they?
They're students.
Are they dentists?
No, they aren't. They're teachers.
Are they students?
No, they aren't. They're firefighters.
Are they pilots?
No, they aren't. They're students.
Are they engineers?
Yes, they are.
Are they salesclerks?
Yes, they are.
Are they students?
Yes, they are.
