My parents give  a book. （    ）

A．my

B．me

C．I

He wants to buy a pair of shoes. He will try on.

A．their

B．they

C．them

______ long. (　　)

A．Its

B．Is

C．It's

—What’s that? (    )
—_________ a robot.

A．They’re

B．It’s

C．She is

Classify the words. （把下列代词分类）
I, you, my, he, she, him, them, mine, their, his, myself, your, yours, hers, it, yourself, our, themselves, ours, me
1. 形容词性物主代词：________________________________________
2. 名词性物主代词：__________________________________________
3. 人称代词主格：____________________________________________
4. 人称代词宾格：____________________________________________