Dave: Father, this is my friend, Tim.
Tim: Nice to meet you, Mr. Cooper.
Mr. Cooper: Nice to meet you, too.
Dave: Tim, these are my grandparents, Peter and Helen. And that's my brother, Paul.
This is my cousin, Bob.
Tim: Hi.And is this your sister?
Dave: Yes, this is Anna.
正确的写"T"，错误的写"F"。
Peter and Helen are Dave's grandfather and grandmother.
Dave, Tim and Paul are friends.
Anna and Paul are sister and brother.
Anna and Bob are cousins.
Mr. Cooper is Bob's father.