1. They feed the dogs and cats every day

the dogs and cats are fed every day

2. Students must do their homework before days

their homework must be done by the students before days

3. They are decorating the Christmas tree now

the Christmas tree is being decorated now

4. He has just sent me a greeting card on my birthday

I have just been a greeting card on my birthday

5. Mary cooks the meals every day

the meals are cooked by Mary every day

6. People usually use computer to design new models

computer is usually used to design new models

7. Mr.Brown has typed his assignment for 2 hours

Mr.Brown's assignment has been typed for 2 hours

8. My mother is cleaning the rooms right now

the rooms are being cleaned by my mother right now

9. In which coutries do they speak E?

in which countries is english spoken?

10. Tom is doing his homework in his room now

the homework is being done by Tom in his room now