(1)ThisisGina'ssister.改成复数句(2)Arethoseyourfriends?(作肯定回答)(3)He'sBob'suncle,
(对划线部分提问)划线部分为Bob'suncle(4)Heismyfather.(改为一般疑问句)(5)BruceismyfatherandAnnismymother.(改为同义句)