A:Is this Tom's bike?
B:No,it's Mike's.
C:Is this John's book?
A:Yes,it's his.
B:Is it Mary's ball?
A:No,it's Joan's.
C:This is Mike's eraser.
B:Yes,I think it's Mike's.
A:I like's Tom's bike.
B:I like Tom's bike ,too.
C:I like Tom's bike,too.
亲：这样的对话很为难,也很无聊.觉得行就采纳,我尽力了!