1. B: Who is she?
Amy: She is my mother.
2. B: Who is he?
Amy: He is my grandpa.
3. B: Who are they?
Amy: They are my aunt(and)uncle.
4. B: Who are they?
Amy: They are my grandpa(and)my father.
5. B: Is he your brother?
Amy: No, he isn’t. He is my cousin.
6. B: Are they your mother(and)father?
Amy: Yes, they are.