1)
Is she a secretary?
Is it an orange?
Are they doctors?
Are we good students?
Are you well?
Is he late?
2)
She is (ou she's) not a painter
You are (aren't) a good singer
It is not (isn't) an apple
John is not (isn't) well
3)
He's not a secretary
He isn't a secretary
You're not a good friend
You aren't a good friend
It's not an orange
It isn't an orange
They're not teachers
They aren't teachers
Jane's not well
Jane isn't well
4)
A teacher
An apple
An elephant
A book
An hour
A player
Espero ter ajudado! Deu trabalho