Change the sentences to passive by filling in the missing words !

1. People eat 40 million hamburgers every day.
   40 million hamburgers every day.
2. People speak English all over the world.
   English all over the world.
   
3. Where did they invent gun powder ?
   Where gun powder ?
4. The police didn't find the missing girl last weekend.
   The missing girl last weekend.
5. Tourists don't visit this museum very often.
   This museum very often.
6. Workers are building a new fun park in town.
   A new fun park in town.
   
7. When did they translate this book into English ?
   When this book into English ?
8. Women send thousands of emails to the star every month.
   Thousands of emails to the star every month.
9. Sally brought me some fresh grapes.
   I some fresh grapes by Sally.
10. Some dangerous looking men were following me the whole evening.
    I the whole evening by some dangerous looking men.

11. George told me about the incident at dinner.
    I about the incident at dinner.
12. They are holding the election next week.
    The election next week.
13. The cleaning lady has watered the plants.
    The plants by the cleaning lady.
14. You must put coins into the slot machine.
    Coins into the slot machine.
15. Sharon will meet you at the airport and take you to the hotel.
    You at the airport and to the hotel by Sharon.
16. Have they delivered the new music system yet ?
    the new music system yet ?
17. You can obtain further information at the desk.
    Further information at the desk.
18. You should send your children to a good school.
    Your children to a good school.
19. They won't take a decision until the next meeting.
    A decision until the next meeting.
20. They have never opened the door before.
    The door before.