A:__Hi___.jim.I__can't___.__find___.my pen.Can you see it?
B:__NO___.I can't.LooK!It's__there___.there,under the desk.
A:Thanks.oh,___it's___not__mine____.Mine is blue,but this___one___is black.Whose is it?
B:Let me__see____.Oh,it's mine
A:Here_it _____,___is___.
B:Thank__you____,____very___,____much____.
A:But where is_____mine___.