1.English is spoken by people all over the world.
2.Is the walting -room cleaned by Tom every day?
3.This house was built by someone in 1952.
4.Frieda will not be met by us at the station.
5.A famous doctor's grandfather is going to be operated on by his grandson.
6.He will be helped by us to finish the work before noon.
7.The door is beings knocked by Uncle Alble .
8.Our children were not looked after by her at this time yesterday.
9.John's arm had been caught hold of by Bob by then.
10.A new hand-bag was promised by them for Mary's birthday.
11.Have the children been told the stories about Lei Feng by your friend.