Find the ABC block

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Across
  1. 4. A place where we can see the calendar.
  2. 6. A instrument that is in the shape of a circle.
Down
  1. 1. Our rainforest layers can be seen here.
  2. 2. We can find many books here.
  3. 3. Where we keep toys.
  4. 4. We can look outside from here.
  5. 5. Where we grow plants.