Question

Chance into negative and interrogative forms.

a) Alexandre is a teacher.
N:
i:

b) they are great secretaries.
N:
I:

c) you are a dedicated student.
N
I:

D) Manuela is an excellent doctor.
N:
I:
ME AJUDEM POR FAVOR!!! ​

Answer 1

a)

N: Alexandre is not a teacher

I: Is Alexandre a teacher?

b)

N: They are not great secretaries.

I: Are they great secretaries?

c)

N: You are not a dedicated student.

I: Are you a dedicated student?

d)

N: Manuela is not an excellent doctor.

I: Is Manuela an excellent doctor?

(*) lembrando que você também pode usar isn't que é a forma contraída de Is not e Aren't que é a forma contraída de Are not.

Espero ter ajudado! ^-^