Are they vets?
No, they aren't. They are hairdressers/ hairstylists
I am Canadian
I am not Canadian
Are you Egyptian?
No, I'm not. I am Brazilian.
Are you a good student?
Yes, I am
I am not hungry
I'm hungry
Are you a chef?
No I'm not. I'm a/an ...
Are you a driver?
Yes, I am/ No I'm not
Are you 20 years old?
No, I'm not
You aren't students
You are students
They aren't dentists
They are dentists
You are 34 years old
You are not/ You aren't 34 years old
They are flight attendants
They are not/ They aren't flight attendants
We are nurses
We are not/ We aren't nurses
We aren't happy.
We are happy