a hello,john.b hello ,ben,this is my frieng.kate.a c nice to m eet you,too.look ,this is
a photo of my family
a oh,
c yes,they are father and mother.
a
c no,he isn't my brother.he is my aunt's son.
a i see.
c yes,you're right.
a
c yes.he's only 6 years old.
补全对话