The door in the wall

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Across
  1. 3. The central, important part of something (in science, the center of a cell).
  2. 7. To get caught up in something, making it hard to get free.
  3. 9. Feeling nervous, upset, or unable to stay calm.
  4. 10. Not caring about something; showing no interest or emotion.
  5. 11. A strong feeling of hopelessness or sadness.
  6. 12. Feeling a bit sad because you’re thinking about something you wish for or miss.
Down
  1. 1. To put up with something difficult and not give up.
  2. 2. Having enough of something; as much as needed.
  3. 4. To say something with confidence or to stand up for yourself.
  4. 5. To struggle or move clumsily, like when you can’t find your balance.
  5. 6. To plan or come up with a clever idea.
  6. 8. The time just after sunset when the sky is starting to get dark.