Past forms

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Across
  1. 2. sing
  2. 3. come
  3. 5. is
  4. 7. buy
  5. 10. drink
  6. 11. think
  7. 12. give
Down
  1. 1. teach
  2. 2. send
  3. 4. take
  4. 5. write
  5. 6. make
  6. 8. have
  7. 9. see