idk what topic is 🗿

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Across
  1. 3. what are u ?
  2. 4. what are u playing right now ?
  3. 7. name of the black spinning cat ?
  4. 8. one plus one equal( write the number) ?
  5. 10. are u searching google while doing this crossword ?
Down
  1. 1. what the longest word in english ?
  2. 2. what H2O mean ?
  3. 5. who is the tallest person ?
  4. 6. what is the mammals that lay egg that live on ground ??
  5. 9. what the name of the emoji at the topic ?