根据对话内容从方框中选择能填入空白处的最佳选项补全对话，其中有两项多余。

A：Is that a picture of your family?

B： 

A：Who is that old man?

B： 

A：Is that woman your mother?

B： 

A：Is this your mother?

B： 

A：She Iooks very young(年轻的)．

B：

A：Is he your father?

B：Yes，that's right．

A．Yes, it is． B．Yes，she is． C．Thank you． D．I'm Mr Wang． E．He is from London． F．He is my grandfather． G．No，that's my aunt，my father's sister．