No rules,no order

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Across
  1. 2. a series of lessons or classes
  2. 7. to give food to people or animals
  3. 9. to go along behind someone or something
  4. 11. a short coat worn on the upper body
  5. 14. to give something to someone for a short time
  6. 16. to get to a place
  7. 18. to look up to and admire someone
  8. 19. behaving in a nice and respectful way
  9. 20. rubbish thrown on the ground
Down
  1. 1. a line of people waiting for something
  2. 3. special clothes that all students in a school wear
  3. 4. a long narrow passage in a school or building
  4. 5. a statement that tells people what they can or cannot do
  5. 6. able to move easily or a cellphone
  6. 8. all things
  7. 10. the way you act towards someone
  8. 12. a small amount of food eaten between meals
  9. 13. food or drink with a lot of sugar
  10. 15. to tell someone to do something
  11. 17. used to talk about possible situations