选择适当的词填空, 把对话补充完整。

Ben: Hello, Tom. How are you?

Tom: Fine. Look, this is a picture of my family.

Ben: （What's, Who's） that man, Tom?Is(he, she) your brother?

Tom: No, he(is, isn't). He is(my, your) father.

Ben: Your father?He is so young.

Tom: Thank you. And that lady is my(friend, mother).