听录音，根据所听到的内容补全下列对话。

Bobby: Look at this picture of my family, Sam.

Sam: . Are your grandpa and grandma?

Bobby: Yes. The two women are my aunts. They are twins.
Sam: Is this your father?

Bobby: Yes. And my mother is him.

Sam: What about the baby ? Is it you?

Bobby: Yes, you are right.