Lang space

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Across
  1. 2. I can fly without wings. I can cry without eyes. Wherever I go, darkness follows me.
  2. 6. The smallest country in the world.
  3. 7. The organ responsible for thinking and memory.
  4. 8. I have keys but no locks, space but no rooms. You can enter, but you can't go inside.
  5. 9. The opposite of borrow.
Down
  1. 1. A book you use when you don't know the meaning of a word.
  2. 3. The world's deepest ocean trench.
  3. 4. The deepest ocean on Earth.
  4. 5. I get wetter the more I dry.
  5. 7. It has branches, but no leaves, fruit, or trunk.