My teacher has a lot of experience _________ English at school.
— 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 .
—Mike,is this Tom’s pencil?—Oh,yes,it is !