英语高手进，急！！！！！！！！！！！！

(1)That is her bus. Those are their buses
(2)She's his friend. They're his friends.
(3)this photo is hers. These photos are theirs.

2.对划线部分提问．
(1)She's in Class Five. Which class is she in?(Five划线）
(2)They're behind the classroom. Where are they?(behind the classroom划线）
(3)Jim's bus is No.13. Which number is Jim's bus?(No.13划线）

her bikes
They are
Photos theirs

What class
Wher are
Which number

(1)、their、 buses.
（2）、they're 、their
（3）、photos 、rheirs

（1）、which class
（2）、where are
（3）、what number

their buses（buses比busses更普遍一些)二者都行
They are
Photos theirs

Which class
Where are
Which one