This and that

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Across
  1. 5. synonym of clever
  2. 7. become better at something
  3. 9. English
  4. 11. synonym for chance
  5. 12. antonym of easy
Down
  1. 1. opposite of boring
  2. 2. something that is not easy to do
  3. 3. succeed in something difficult
  4. 4. synonym for truthful
  5. 6. when you don't like studying you are this
  6. 8. to prepare for a job, activity or sport
  7. 10. thing to do