Modal Verbs

Write, complete and translate 

http://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php

http://www.englishexercises.org/makeagame/viewgame.asp?id=2229#a

http://esl.fis.edu/grammar/multi/modal1.htm

http://www.english-grammar-lessons.com/should/exercise5.swf

http://www.learnenglishfeelgood.com/esl-mixed-modals1.html#

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-9225.php