—Where you last weekend? —I____ at my uncle’s home.A. are, am B. were. am C. were. was
We should protect the earth,we will have no water to drink.
—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.