Irregular verbs exercices

http://www.agendaweb.org/exercises/verbs/simple-past-irregular-3
http://www.bradleys-english-school.com/online/concentration/past1.html
http://www.montsemorales.com/gramatica/34irregverbs.htm
http://www.manythings.org/wbg/verbs_past2-mw.html
http://www.eslgamesplus.com/irregular-past-tense-esl-grammar-jeopardy-quiz-game/
http://www.kico4u.de/english/uebungen/6klasse/whataday.htm
http://www.learnenglishfeelgood.com/simple-past-tense1.html