Uncountable nouns

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Across
  1. 3. You can find it in books or on the internet. We need it to learn new things.
  2. 5. It falls from the sky in winter and is white and cold.
  3. 7. You can’t see it, but you can feel it on your skin on a hot day.
  4. 8. We can’t see it, but we need it to breathe.
Down
  1. 1. It is the energy from the sun or a lamp that makes it possible to see things.
  2. 2. It is a very expensive yellow metal, used for making rings and other beautiful objects.
  3. 4. It makes us happy when we do something we enjoy.
  4. 6. It is important for life and you can drink it.