Irregular verbs

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Across
  1. 3. to begin, I __, I have begun
  2. 5. to forget, I forgot, I have __
  3. 6. to draw, I drew, I have _
  4. 8. to __, I thought, I have thought
Down
  1. 1. to become, I __, I have become
  2. 2. to eat, I __, I have eaten
  3. 3. to bring, I brought, I have __
  4. 4. to drink, I drank, I have __
  5. 6. to do, I __, I have done
  6. 7. to sing, I sang, I have __