完成对话：（每空一词，每空一分，共10分）
A: Hi, this is a photo of my   
B: Oh!   these    parents?
A:    .They’re my grandparents. These are my    . This is my father.
name’s Mark. And this is my    . She is Lisa.
B: Is he your grandfather?
A:    , he is. His name is Bill. and these are my cousins.
B: ____ that your sister?
A: No, that’s my aunt.     name is Jenny.