To practise the difference between the Simple Past and the Past Perfect.
http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/pastpf2.htm
http://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises
Now, it's the distinction between Past Simple and Past Continuous.
http://www.english-4u.de/past_prog_ex1.htm
http://www.ilv.ucl.ac.be/gramlink-an/exercices/passe/past/past05.htm
It's time for the Simple Present - Present Continuous
http://www.englishpage.com/verbpage/verbs1.htm
Snakes and Ladders:
http://www.eslgamesworld.com/members/games/grammar/present%20tenses/present%20tenses%20snakes%20and%20ladders.html ( Present Simple vs Present Continuous)
The Wheel of Fortune
http://www.eslgamesworld.com/members/games/grammar/perfectpast/spin%20wheel%20present%20past%20tenses.html (Simple Past vs Present Perfect)
Jeopardy Betting Games:
http://www.eslgamesworld.com/members/games/grammar/perfectpast/past%20simple%20betting.html (Simple Past)
http://www.eslgamesworld.com/members/games/grammar/perfectpast/past%20progressive%20vs.%20past%20simple%20betting.html ( Past Simple vs Past Continuous)
Hangman:
http://www.eslgamesworld.com/members/games/grammar/present%20tenses/present%20progressive%20hangman.html (Present Continuous)
http://www.eslgamesworld.com/members/games/grammar/present%20tenses/present%20tenses%20hangman.html ( Present Simple vs Present Continuous)
http://www.eslgamesworld.com/members/games/grammar/perfectpast/present%20perfect%20hangman.html ( Present Perfect)