Irregular Verbs

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Across
  1. 2. to bite (-)
  2. 4. to drink (-)
  3. 5. to become (+)
  4. 7. to buy (+)
  5. 8. to drive (?)
  6. 10. to bring (-)
Down
  1. 1. to do (?)
  2. 2. to break (-)
  3. 3. to come (+)
  4. 6. to choose (+)
  5. 8. to dig (?)
  6. 9. to draw (?)