Camping!

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Across
  1. 4. a place to play beyhind your house
  2. 6. the hottest season of the year
  3. 7. you can sleep in it when camping, it keeps you warm
Down
  1. 1. you carry things in it
  2. 2. opposite to inside
  3. 3. you use it to see wheb it's dark
  4. 5. you set it up to sleep in