看图，选择下面的句子，把对话补充完整，将序号填在(   )内。

(   )（1）A. I'm four.            B. Four.             C. I'm fine, thank you.
(   )（2）A. She's my mother.     B. He's my father.   C. He's my brother.
(   )（3）A. Nice to meet you.    B. Good morning.     C. Good afternoon.
(   )（4）A. He's my father.      B. She's my sister.  C. He's my brother.