Countable Vs Uncountable Nouns

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Across
  1. 4. A pail of
  2. 5. A bale of
  3. 6. A round of
  4. 7. A loaf of
Down
  1. 1. A bar of
  2. 2. A speck of
  3. 3. A constellation of
  4. 4. A bushel of