Bob used to ______in the countryside . But now he is used to _________in the big city .
—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 .