Grammar and Usage quiz 1

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Across
  1. 1. how to make singular nouns plural
  2. 5. irregular plural noun
  3. 6. a small harbor
  4. 7. how to make words that end in "ch, sh and x" plural
Down
  1. 1. a noun by itself
  2. 2. more than one noun
  3. 3. against cellphones
  4. 4. a container for sea creatures