Chuyển các câu sau thành câu bị động

Chuyển các câu sau thành câu bị động :

- They may send the man to prison.
- They sell English books in that shop.
- They separated the rice from the husk.
- The government has not changes the regulation.
- Someone is cutting the grass now.
- They will sign the contract tomorrow.
- Thuy has to finish her homework tonight.
- Ann had fed the cats before she went to the cinema.
- Are you going to repair those shoes ?
- John invited Fiona to his birthday party last night.
- Her mother was taking her to hospital at this time yesterday.