After walking so long a way,you must have been very tired,__

After walking so long a way,you must have been very tired,____you?
A.were B.have C.have not D.must not
I'm late for the meeting,______?
A.am not i B.are not I C.do not I D.are not you
Wang Ping can't be in the bedroom,_____?
A.can she B.is she C.can not he D.is not he