根据提示完成句子。
1. There are ________________ (20把椅子) in the classroom. 
2. The pencil box is ________ the desk. (在···上)
3. Steven is drawing on the ________.
4. ________ name is Li Ming. ________ is a boy.
5. —How many ________ are there? (55支铅笔)
—There are ________.

—Is this ______ schoolbag? (   )
—Yes, it is my schoolbag.

A．your

B．his

C．her

D．its

This is my brother. That is __________ ball. (    )

A．her

B．my

C．his

Put ____ pencil on the desk. （   ）

A．you

B．me

C．your

写出下列单词的正确形式。
1. high(反义词)---___________    2. bow(复数形式)---__________
3. card(复数形式)---__________   4. friend(复数形式)---_________
5. I(形容词性物主代词)---_________