1.A big playground is being built af the foot of the mountain.
2.John always goes to school by bike in order to save time.
3.The driver did not know when he would leave for Shanghai.
4.It seemed that he had already knew it.
5.The little girl was flying the plane and her heat was beating fast.
6.He suggested that we build no more buildings.
7.Do you remember that JOhn and his father went to see him last year?