Change these sentences into Passive voice

Task 6. Change these sentences into Passive voice
1. Have you sent the Christmas cards to your family?
2. The committee appointed Alice secretary for the meeting.
3. He hides the broken cup in the drawer.
4. They keep this room tidy all the time.
5. They all voted the party a great success.
 
Task 7. Change these sentences into Passive voice
1. My father waters this flower every morning.
2. John invited Fiona to his birthday party last night.
3. Her mother is preparing the dinner in the kitchen.
4. We should clean our teeth twice a day.
5. Our teachers have explained the English grammar.
6. Some drunk drivers caused the accident in this city.
7. Tom will visit his parents next month.
8. The manager didn’t phone the secretary this morning.
9. Did Mary this beautiful dress?
10. I won’t hang these old pictures in the living room.