1. Listening Exercises.
Divided into levels. From the most basic level (A2) to an advanced level
(B2) in the different links below.
http://javiaguera.wordpress.com/?s=listening
http://learnenglishteens.britishcouncil.org/skills/listening-skills-practice
http://www.mansioningles.com/listening00.htm
Modal verbs exercises.
http://www.englishexercises.org/makeagame/viewgame.asp?id=2229
http://www.learnenglish-online.com/grammar/modals/tests/modaltest2.html
http://www.agendaweb.org/verbs/modals-exercises.html
Exercises related to health issues.
http://www.flo-joe.co.uk/preliminaryenglish/vocabulary/health-
problems.htm
http://speakspeak.com/english-grammar-exercises/intermediate/words-
related-to-health-and-illness
http://learnenglishteens.britishcouncil.org/grammar-
vocabulary/vocabulary-exercises/health