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English grammar, Make plurals from nouns with ‘o’ endings

Make these singular nouns into plurals (Note. You must type the whole word). Clue: When a singular noun ends in ‘o’ we have to add ‘s’ or ‘es’ to make it plural. It is not easy to tell whether to add ‘es’ or just ‘s’ to words ending in ‘o’. Can you see any patterns? Click on the ‘Finished’ button to check how many answers you have right.

  1. radio
  2. video
  3.hero
  4. domino
  5. kilo
  6. piano
  7. tomato
  8. potato
  9. torpedo
10. echo

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