快.被动语句等等的.

题目

快.被动语句等等的.
将下列各句改为相应的主动语态或被动语态
we clean our classroom every day
the book was put on the desk by my sister just now
the teachers take good care of the kids at school
a lot of things are done by the robot in this factory
people paly basketball all over the world(改为被动语态）
lucy mops the floor after school(改为被动语态)
mum ofthen asks my sister to practice singning in the morning （被动语态）
a meeting was held by them two hours ago （改为主动句）

答案

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.