找出每组中与其他两个不同类的一项 
I visited Beijing last week.I was in there five days.
A. at B. in C. for
Thank you for your help. What !
A.good a boy B. a boy good C. a good boy
This book is mine. But that is .
A. your B. yours C. you
Before have lunch, You should .
A. tidy the room B.wash your hands C. jump on the bed
Yesterday ______team won. They got seventy points.
A. them B. They C. their