http://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Countable_and_uncontable_nouns/Countable_-_Uncountable_nouns_kx176rx
http://www.english-at-home.com/grammar-exercise-some-any-no/
http://www.language-worksheets.com/countable-uncountable-elementary.html
http://www.english-4u.de/some_any_ex1.htm