=>
12. Dam Sen Amusement Park has been visited by my family.
13. The animals are fed by the zoo keepers twice a day.
14. Their car has been sold to pay their debt.
15. Flowers are going to be grown in the garden.
16. This button musn't be touched while the experiment is in progress.
17. Were jeans made two hundred years ago?
18. This kind of cloth isn't used t make shirts.
19. The first prize has just been won by Trang.
20. The Internet has been used for education in recent years.
21. I think his room should be decorated again.
22. This letter should be sent before Saturday.
23. The report has to be finished today.

Dam Sen Amusement Park has been visited by my family

The animals are fed by the zoo keepers twice a day

Their car has been sold to pay their debt

Flowers are going to be grown in the garden

This button mustn't be touched while the experiment is in progress

A whistle will be blown if there is an emergency

Are jean made two hundred years ago?

This kind of cloth is not used to make shirts

Your bill should be paid before you leave the hotel

The first prize has just been won by Trang

The Internet has been used for education in recent years

I think his room should be decorated again

This letter should be sent before Saturday

The report has to be finished today