1.Our classroom is cleaned (by us) every day.
2.My sister put the book on the desk just now.
3.The kids are taken good care of by the teachers at school.
4.The robot does a lot of things in this factory.
5.Basketball is played all over the world.
6.The floor is mopped by Lucy after school.
7.My sister is often asked to practice singing in the morning by Mum.
8.They held a meeting two hours ago.