用括号内所给词的适当形式填空
These are her _________ (brother).
_________ (she) ruler is under the chair.
__________(my)am a girl. My English name is Gina.
_________(this)are my grandparents.
Bob and I ______________(be) friends.
This is my book, not __________(you).
These are two ___________(watch).
This is ____________(they) room.
They are not our balls. They are these (boy) ____________.
How _________ (be) your father?