SOME, ANY, A, AN

EXERCISE 1: http://a4esl.org/q/h/0001/jb-someany.html
EXERCISE 2. http://www.english-test.net/esl/learn/english/grammar/ei099/esl-test.php
EXERCISE 3: http://www.english-test.net/esl/learn/english/grammar/ei099/esl-test.php
EXERCISE 4: http://www.englishexercises.org/makeagame/viewgame.asp?id=2920
EXERCISE 5: http://www.englishexercises.org/makeagame/viewgame.asp?id=7849
EXERCISE 6: http://www.englishexercises.org/makeagame/viewgame.asp?id=6293
EXERCISE 7: http://www.englishexercises.org/makeagame/viewgame.asp?id=2920
EXERCISE 8: http://www.englishexercises.org/makeagame/viewgame.asp?id=6355
EXERCISE 9: http://www.englishexercises.org/makeagame/viewgame.asp?id=8648