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1. The problem can be sold by us. 

2. Experiments on animals should be stopped. 

3. Life might be found on another planet. 

4. The bicycle is going to be cleaned by his sister. 

5. A new school is going to be built.

6. All the schools in the city have to be improved. 

7. Five million bottles of champagne will be produced in France next year. 

8. Trees will be planted in the school yard tomorrow. 

9. This question can be answered by most of the students. 

10. The room will be cleaned later. 

11. A meeting will be held by the students before the Teacher’s Day. 

12. Your bicycle will be repaired by me tomorrow afternoon. 

13. Tires can be recycled to make pipes or floor coverings.

14. Applications should be sent before December 30th.

15. The contract must be signed by the manager today. 

16. The new bridge will be built by the end of the year. 

17. Cloth bags should be used instead of plastic bags. 

18. The garbage can be used to make fertilizer. 

19. This parcel mustn’t be opened until Christmas Day. 

20. Tea can’t be made with cold water. 

21. Jeans can’t be worn to the school by us. 

22. Dangerous diseases can be cured by Penicillin. 

23. Her exercises must be finished by Helen by 9 o’clock. 

24. Matches should be placed out of the children’s reach.