Irregular verbs

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Across
  1. 1. - past of fly
  2. 4. - past of read
  3. 6. - past of watch
  4. 8. - past of make
  5. 9. - past of eat
  6. 10. - past of sing
Down
  1. 2. - past of write
  2. 3. - past of be
  3. 5. - past of see
  4. 6. - past of go
  5. 7. - past of drink