school puzzle

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Across
  1. 4. you some time use it for your work
  2. 7. students drink this (2 words)
  3. 9. you put paper on it
  4. 10. the teacher rights on it
  5. 12. bottle you use this to drink
  6. 13. you use this when your pencil is dull
Down
  1. 1. you use this to find words
  2. 2. something you use to put your food in
  3. 3. you use it on the whiteboard
  4. 5. you write on this
  5. 6. you write with this
  6. 8. this is transparent and brings air in the class
  7. 9. you sit on it every day
  8. 11. you use this to fix mistakes