I. Change the sentences into passive voice
11. They are going to hold the prize giving in that hotel.
12. Did they invite you to visit their wedding?
13. These men have started to build a bridge across the river.
14. She opens the windows every time she gets home.
15,. You must wear hard hats while we are carrying out construction work.
16. How many pages have you read?
17. How often do you milk the cows on the farm?
18. They say that Ling sings very beautifully.
19. Everyone believed his family moved to New York .
20. Someone rumours his family moved to New York last year.
21. I have a hairdresser cut my hair every 2 months.
22. We are having them chop down the trees in the garden.
23. When are you going to have people wash the curtains?