Resposta:
1. a) is
N: She is not a beautiful person.
b) are
N: You are not the student.
c) are
N: They are not friends.
d) is
N: It is not my dog.
2) a) is
I: Is he an engineer?
b) am
I: Am I a teacher?
c) are
I: Are Jean and Mary friends?
d) is
I: Is Sophie my sister?
