联系上下文，补全下列对话。 A: What's that 1.____ the

问题：

联系上下文，补全下列对话。  

A: What's that 1.____     the wall (墙)?    

B: It's my 2.             photo!

A: 3.            a nice photo!              

B: 4.            5.______.

A: Who's 6.___     ?                  

B: She's my mother.

A: Is this 7.___      your father?          

B: No, he's my uncle.

A: You are this little boy, 8._          think.    

B: Yes, it's 9._____.