past simple irregular verbs

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Across
  1. 6. think(past simple)
  2. 7. speak (past simple)
  3. 8. go(past simple)
  4. 9. become (past simple)
  5. 11. fall(past simple)
  6. 12. have(past simple)
Down
  1. 1. write (past simple)
  2. 2. begin (past simple)
  3. 3. is (past simple)
  4. 4. break (past simple)
  5. 5. eat(past simple)
  6. 8. are (past simple)
  7. 9. bring (past simple)
  8. 10. come(past simple)
  9. 13. do (past simple)