1. Shut the door! 2. It's everyone’s duty to protect the environment. 3. It's necessary to know about waste sorting. 4. Tell us the truth! 5. Clean your room! 6. It's necessary to learn English n...

1. The door should be shut! 2. Protecting the environment is everyone's duty. 3. Knowing about waste sorting is necessary. 4. The truth should be told to us! 5. Your room should be cleaned! 6. Learning English is necessary nowadays. 7. The bike needs to be repaired! 8. This lesson should be learned by heart. 9. Picking your little brother up at school is your duty. 10. Sweeping the floor every day is my sister's duty.