TENSES PUZZLE

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Across
  1. 2. Past tense of write
  2. 3. Past tense of drink
  3. 5. Past participle of run
  4. 7. Simple present tense of drink (he/she/it)
  5. 9. Past tense of run
  6. 10. Past tense of go
  7. 11. Past tense of be (I/he/she/it)
  8. 13. Past participle of write
  9. 15. Past tense of sing
  10. 17. Present continuous form of run
  11. 19. Simple present tense of go (he/she/it)
  12. 22. Present continuous form of write
  13. 24. Present continuous form of sing
  14. 25. Present tense auxiliary verb (he/she/it)
  15. 26. Present tense of do (he/she/it)
Down
  1. 1. Past participle of be
  2. 3. Past participle of drink
  3. 4. Present tense of be (I)
  4. 6. Present continuous form of drink
  5. 8. Past participle of sing
  6. 10. Base form of write
  7. 11. Past tense of be (you/we/they)
  8. 12. Present tense auxiliary verb (I/you/we/they)
  9. 14. Simple present tense of run (he/she/it)
  10. 16. Present tense of be (you/we/they)
  11. 18. Present continuous form of go
  12. 19. Past participle of go
  13. 20. Simple present tense of sing (he/she/it)
  14. 21. Past participle of do
  15. 22. Simple present tense of write (he/she/it)
  16. 23. Present tense of be (he/she/it)
  17. 25. Past perfect auxiliary verb
  18. 26. Past tense of do