Change the following sentences from active to passive

Change the following sentences from active to passive ! :

1. The dentist pulled out my tooth.
   My tooth.......  by the dentist.
2. Who delivered that parcel ?
   Who  that parcel...........  by ?
3. The police are questioning him now.
   He ........... now by the police
4. The waitress serves breakfast at 7 o’clock. 
   Breakfast ................. at 7 o’clock by the waitress.
5. Who did they give the prize to?
   Who .......... the prize ........... to ?
6. The news seemed to have shocked him.
   He seemed ................ by the news.
7. You should take these tablets before meals.
   These tablets..........  before meals.
8. The teacher has sent him out of the classroom.
   He  ...............out of the classroom by the teacher.
9. You must wash coloured clothes separately.
   Coloured clothes..........  separately.
10. The mayor will open the new sports centre next month.
    The new sports centre ........... by the mayor next month.
11. Many parents influence their children strongly.
    Children .............. strongly by most parents.
12. They were pulling down the building when I walked by.
    The building ................. down when I walked by.
13. Somebody has stolen Jack's car recently.
    Jack’s car ........... recently.
14. He expects people to show him more respect.
    He expects ............. more respect.
15. Has anyone collected the rubbish yet ?
     the rubbish...........  yet ?
16. Nobody has seen the Queen since July.
    The Queen................  since July.