Answer:
I met some nice PEOPLE when I was walking along the beach. (countable)
The BREAD my mother prepares is delicious. (uncountable)
some POLICEMEN are organizing road traffic to avoid any accident. (countable)
We need some GLUE to fix the vase. (Uncountable)
Explanation:
uncountable nouns are substances, concepts etc that we cannot divide into separate elements. We cannot "count" them. For example, we cannot count "milk". We can count "bottles of milk" or "litres of milk", but we cannot count "milk" itself.
