--- ______ do you improve your listening skills? --- I improve it _______ listening to tapes.
—Why are you standing there,Kangkang? —I can’t see the blackboard clearly.Two tall boys are sitting me.
—are you going to Shanghai? —I’m taking the plane.
—Which is the biggest number of the four? —.
What did Mr.Smith do before he came to China? —He in a car factory.
—Hello! May I speak to Lucy,please? —Sorry,I’m afraid you have the wrong .