Why are you standing there，Mary？-I can’t see the blackboard. Two tall boys are sitting _________ me.[ ]

I was ______ tired______ I couldn’t take off my shoes.[ ]

Many visitors come to Beijing because it is ________ city.

Do you believe that paper is made _____ wood?—Yes, I do. And you can see that books are made _____ paper.[ ]

I’ve shown you all the interesting and important places of our school. — Thank you for so much time.