Q. Fill in the blanks using 'should', 'must', 'mustn't, 'have to' or 'ought to': 1. You 2. We He 3. take care of your health. obey the laws of our country. obey his teacher. die sooner or later. 4. We 5. Walk carefully lest you. 6. You 7. One 8. You 9. The Bursar. 10. Students 11. The doctor told me that I 12. We 13. Children. 14. The headmaster 15. You 16. You 17. The students 18. You ______ fall down. start your work in right earnest. love one's neighbour. not give way to despair even if you fail once. check all the accounts. prepare their lessons well. do as we are told. not smoke any more. obey and respect their elders. check all those accounts. squander your parent's hard earned money. mend your own ways before you criticize others. be in school at eight. disobey the laws of the land.​