Verbs of effort

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Across
  1. 4. on to spend time and effort improving or developing something
  2. 5. to successfully deal with or defeat a problem, difficulty, or challenge
  3. 6. to try to achieve something over a period of time
Down
  1. 1. to manage or deal successfully with a difficult situation
  2. 2. up to stop trying to do something because it is too difficult or because you believe you cannot succeed
  3. 3. to make an effort to deal with a problem or difficult task
  4. 7. with unable to change or get rid of a difficult situation, responsibility, or problem