Exercise 7:

2, He was seen stealing your car.

3, Her student is being watched doing the homework by the teacher.

4, You won’t be let do that silly thing again by him.

5, The children are made to work hard.

6, He was made to work all day.

7, The woman was seen putting the jewelry in her bag by the detective.

8, The hostages were made to lie down by the terrorists.

9, Drivers are advised to use an alternative route by the police.

10, I am helped to do all these difficult exercises by her.

Exercise 8:

1, This dress can’t be washed by you.

2, The wine should be opened by you about 3 hours before you use it.

3, Books may be kept by members for 3 weeks.

4, Their tickets should not be thrown away by passengers as inspectors may check them during the journey.

5, The accident ought to have been reported to the police by them.

6, Umbrellas and sticks should be left in the cloakroom by visitors.

7, Those books should have been taken back to the library by you.

Exercise 9:

1, D – My watch was broken.

2, D – a and b are correct

3, C –I am often asked to help him.

4, B – His betrayal was never forgiven by his friends.

5, B – I’m sure the matter will be settled easily.