A:Excus me,Wang Dong .Is your bag?
B:( No ,it isn't ).My bag is here.( Perhaps )it's that girl's bag.
A:OK.( Excuse me ) Is this your bag?
C:Oh,yes.It's my bag.
A:( Here you are ).
C:Thank you very much.
A:( That's all right ).
A:Excus me,Wang Dong .Is your bag?
B:( No ,it isn't ).My bag is here.( Perhaps )it's that girl's bag.
A:OK.( Excuse me ) Is this your bag?
C:Oh,yes.It's my bag.
A:( Here you are ).
C:Thank you very much.
A:( That's all right ).