Who is she?
She's my sister.
Who is he?
He's my grandpa.
Who are they?
They are my grandparents.
Who is she?
She's my grandma.
Who are they?
They are my parents.
Who are they?
They are my siblings.
Who is he?
He's my brother.
Who is she?
She's my mother/mom.
Who is he?
He's my father/dad.