how much and many

http://www.eflnet.com/grammar/muchmany1.php#.U0WR_qh5PsY

http://www.ego4u.com/en/cram-up/vocabulary/much-many/exercises

http://www.englishexercises.org/makeagame/viewgame.asp?id=761

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-5769.php

http://www.ego4u.com/en/cram-up/vocabulary/much-many/exercises?02

http://www.ego4u.com/en/cram-up/vocabulary/much-many/exercises?03

http://learningapps.org/59623

http://www.montsemorales.com/gramatica/howmanybuild3-1.htm

http://first-english.org/english_learning/english_beginners/much_many_exercises/01_english_much_exercises.htm