11. This factory wasn't built during the Second World War by the German
12. This house and these cars are going to be painted for Christmas day by the Greens
13. The cats had been fed before she went to the cinema by Ann
14. The pollution problems have been discussed since last week by the students
15. Has the most valuable painting in the national museum been stolen by the thieves
16. The new president will be interviewed on TV
17. How many languages are spoken in Canada by them ?
18. Are those shoes going to be prepared by you ?
19. His nose has been broken in a football match by him
20. Have the above sentences been finished by you?