Preterite stem-changing verbs

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Across
  1. 3. (she)died
  2. 6. (we)prefer
  3. 8. (he)slept
  4. 9. (they)had fun
Down
  1. 1. (I)played
  2. 2. (they)followed
  3. 4. the class repeated
  4. 5. (tu abuela)served
  5. 7. (I)started