Past simple vs. past continuous

 
 http://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex02

  http://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises

 http://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex03

http://www.englishpage.com/verbpage/verbs3.htm

 http://www.englishpage.com/verbpage/verbs4.htm

 http://www.englishpage.com/verbpage/verbs16.htm

 http://www.englishpage.com/verbpage/verbs17.htm

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