SIMPLE PAST

http://www.ego4u.com/en/cram-up/grammar/simple-past

http://www.inglesonline.com.br/exercicios-de-ingles/


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

http://www.englisch-hilfen.de/en/exercises/questions/simple_past.htm

http://www.englishpage.com/verbpage/simplepast.html

SIMPLE PRESENT x PRESENT CONTINUOUS

http://www.ego4u.com/en/cram-up/grammar/simpre-prepro