Countable and uncountable exercises

http://www.englishexercises.org/makeagame/viewgame.asp?id=3246
http://a4esl.org/q/j/km/mc-noncount.html
http://www.carmenlu.com/first/grammar/countable1_1.htm
http://ww2.college-em.qc.ca/prof/epritchard/countnc2.htm
http://www.montsemorales.com/gramatica/CountableSpot1-6.htm
http://www.myenglishpages.com/site_php_files/grammar-exercise-little-few.php