Irregular verbs in the past

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Across
  1. 4. forget
  2. 5. drive
  3. 9. drink
  4. 10. catch
  5. 11. keep
Down
  1. 1. break
  2. 2. find
  3. 3. buy
  4. 4. feel
  5. 6. bring
  6. 7. be
  7. 8. become