D1

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Across
  1. 2. the space in a wall where a door opens
  2. 3. a detailed study of a subject, especially in order to discover (new) information or reach a (new) understanding
  3. 7. a man who work in library.
  4. 8. to start to be seen or to be present
  5. 9. the frame of bones supporting a human or animal body
Down
  1. 1. not sleeping
  2. 3. a type of question that describes something in a difficult and confusing way and has a clever or funny answer, often asked as a game
  3. 4. a long roll of paper
  4. 5. to get and keep things of one type such as stamps or coins as a hobby
  5. 6. look for a long time with the eyes wide open