Exercise

Change the active into the passive. Fill in the correct form of the verb...
  1. A policeman stopped us. > We  by a policeman.
  2. They built this bridge in 1986. > This bridge  in 1986.
  3. They invited us to the party. > We  to the party.
  4. Edison didn't invent the computer. > The computer  by Edison.
  5. The storm damaged many houses. > Many houses  by the storm.
  6. When did they finish the project? > When  the project ?
  7. Nobody uses this room very often. > This room  very often.
  8. How many cars did they sell? > How many cars ?
  9. They didn't take anybody to hospital. > Nobody  to hospital.
  10. They make paper from wood. > Paper  from wood.