读对话，判断句子正误。

Kitty：Are you a girl?

Peter：No, I'm not. I'm a boy.

Kitty：How are you?

Peter：I am fine, thank you.

Kitty：Are you nine(九岁)?

Peter：Yes, I am. Today(今天) is my birthday(生日).

Kitty：I am nine too(也). Are you Joe?

Peter：No, I am not. I am Peter.