General knowledge crossword!

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Across
  1. 2. Where do the Simpsons live?
  2. 3. What is the second largest country in the world?
  3. 4. Who is the most popular singer on Spotify?
  4. 5. Where is Rafa Nadal from?
  5. 8. How many countries are in the U.K.?
  6. 12. What is the world's biggest cat?
  7. 13. What is the oldest football stadium in Spain?
  8. 14. What is the biggest supermarket in Spain?
  9. 15. What famous ship sank in 1912?
  10. 16. What is the world's largest city?
  11. 17. What is the capital of Argentina?
  12. 18. How many planets are there in the solar system?
Down
  1. 1. Who lives in a pineapple under the sea?
  2. 6. How many bones does a shark have?
  3. 7. Where did the Olympics start?
  4. 9. What is the location of the tallest building in the world?
  5. 10. What TV series is set in Hawkins, Indiana?
  6. 11. Who is the richest person in the world?