English Crossword

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Across
  1. 2. a room or building used to do scientific tests and experiments
  2. 3. extraordinary intellectual power synonym: Mr. Luke
  3. 6. a farm product grown to be harvested, often for food
  4. 8. to make a short deep sound with one's voice
  5. 12. of, relating to, or produced by electricity
  6. 13. to stop briefly
  7. 14. to make something sure or certain
  8. 15. having a rough surface or jagged outline
  9. 16. to find out what something is or who someone is
  10. 19. happening or encountered from time to time
  11. 21. a person whose job is to build, design, or fix machines/buildings/structures
Down
  1. 1. the money made from selling something
  2. 4. a test to find out or prove something
  3. 5. to give support, confidence, or hope to someone
  4. 7. to make an urgent request; appeal
  5. 9. having a chance of danger
  6. 10. a person who controls and uses a machine
  7. 11. a mass of tiny drops of water in the air
  8. 17. something that causes harm or pain
  9. 18. a small mechanical device
  10. 20. an original device, system, or process