PASSIVE VOICE – MODAL VERBS
1. Your shoes must be taken off
2. Cigarettes shouldn’t be smoked in this room by him
3. Tom could be seen in the crowd by us
4. You might be helped by Eddie if he is asked by you
5. Some lemonade can be ordered at the bar by us
6. Our sea has to be protected by us
7. The car ought to be parked in the right place
8. English should be spoken in class by you
9. A dog used to be kept by Mary
10. Tickets would be bought at this booth
11. Rooms can be booked in advance
12. His car may be borrowed by us for a day