Summer holidays

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Across
  1. 3. a place where young people can go in summer
  2. 7. a gethering of people who haven't seen each other for a long time
  3. 8. a bag you carry on your back
  4. 9. the opposite of "inside"
Down
  1. 1. a loud noise after a flach of lightning
  2. 2. an outdoor meal
  3. 4. appears in the sky when the sun shines through the rain
  4. 5. to sit or lie in the sun
  5. 6. a type of waterbird