, is this your eraser, Eric?

      , is this your eraser, Eric?

A．Ok               B．Good morning      C．Hello             D．Excuse me

______, is this your eraser?

A. OK     B. Good morning      C. Hello D. Excuse me

—Is this your eraser?    —______.   

—Is this your eraser? —______.

A.Yes,it isn’t B.No,this isn’t C.No,it isn’t D.Yes,this is