http://learnenglishkids.britishcouncil.org/en/grammar-games/present-simple-and-present-continuous
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm
QUIZ:
http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/simcon1.htm
FAMOUS SONG:
http://www.ciberatalayas.com/cursos/lemontree.swf
