Some links to practice at home!!!

PRESENT SIMPLE TENSE

http://www.englishclub.com/grammar/verb-tenses_present-simple_quiz.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=1555

PRESENT CONTINUOS TENSE

http://www.eclecticenglish.com/grammar/PresentContinuous1F.html

SIMPLE PAST

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