IV
1, I have heard her sing this song several times.

-> She has been heard to sing this song several times by me.

2, People saw him steal your car.

-> He was seen to steal your car.

3, The teacher is watching them work.

-> They are being watched to work by the teacher.

4, He won't let you do that silly thing again.

-> You won't be let to do that silly thing again.

5, Peole don;t make the children work hard.

-> The children aren't made to work hard.
6, They made him work all daay.

-> He was made to work all day.

7, The detective saw the wonman putting the jewerlry in her bag.

-> The woman was seen putting the jewelry in her bag by the detective.

8, The errorists made the hostages lie down.

-> The hostages were made to lie down by the errorists.

9, Police advise drivers to use an alternative route.

-> Drivers are advised to use an alternative route by the police.

10, She helps me do all these dificult exercises.

-> I am helped to do all these difficult exercises by her.