Day1. The use of Is/Are/Am
Day2. The use of was/were
Day3. The use of Model Verb "Can"
Day4. The use of Model Verb "May"
Day5. The use of Model Verb "Shall:
Day6. The use of Model Verb "Will"
Day7. The use of Model Verb "Could"
Day8. The use of Model Verb "Might"
Day9. The use of Model Verb "Should"
Day10. The use of Model Verb "Would"
Day12. The use of Model Verb "Must"
Day-13 The use of Model Verb "Ought to"
Day-14. The use of Model Verb "Used to"
Day-15. The use of Model Verb "Need"
Day-16. The use of Model Verb "Dare"
Day-17. The use of Do, Does, Did)
Day-18. The use of Has and Have
Day- 19. The use of Had
Day- 20. INFINITIVE
DAY 21. GERUND