Помогите с английским, пожалуйста. Переведите предложения в пассивный залог, дайте два варианта там, где это возможно:

1. We were shown the secret box. The secret box was shown to us.2. We were allowed some chocolate. Some chocolate was allowed to us. 3. Laura was sent a letter. A letter was sent to Laura.4. We were sent twenty dollars. Twenty dollars were sent to us.5. Our bills were paid.6. They were told a funny story. A funny story was told to them.7. We were asked two questions. Two questions were asked to us.8. I was offered a ticket for a concert. A ticket for a concert was offered to me.