1. The room will be cleaned later.
2. This parcel mustn't be opened until Christmas Day.
3. Tea can't be made with cold water.
4. A meeting will be held by the students before the Teacher's Day.
5. Tires can be recycled to make pipes or floor coverings.
6. Applications should be sent before December 30th.
7. The contract must be signed by the manager today.
8. The new bridge will be built by the end of the year.
9. Cloth bags should be used instead of plastic bags.
10. The garbage can be used to make fertilizer.
11. The old car tires will be recycled to make pipes and floor coverings.
12. Shoes and sandals will be made from recycled old car tires.
13. The glass bottles will be broken into small pieces.
14. The glass pieces will melted under great heat.
15. The melted glass will be blown into new bottles.
16. I will be collected at the airport by John.
17. This form must be signed by your teacher.
18. A class discussion will be held by our form teacher next Monday.
19. Will she be invited to your birthday party?
20. Jeans can't be worn at work.
II.
1. The rice was separated from the husk.
2. A fire was made by their camp by the boys.
3. This house was built more than one hundred years ago.
4. His book was published by the publisher in 1996.
5. Our desk was repaired during the weekend.
6. Liz was invited to the rice-cooking festival by Ba.
7. The festival was held in the communal house yard.
8. I was taught to draw the Christmas cards by Miss Thanh.
9. Children were given presents by Santa Claus on Christmas Eve.
10. Christmas songs were performed for people in town.