GRAMMAR EXERCISES
Let's practice some structures
THERE IS AND THERE ARE
http://www.autoenglish.org/gr.there.i.htm
PAST TIME STRUCTURES
http://www.ompersonal.net/omverbs/simplepast.htm
IRREGULAR VERBS LIST
http://www.english-4u.de/iv_list.htm
PAST TIME EXERCISES
http://www.english-4u.de/past_tense_ex4.htm
http://www.english-4u.de/past_tense_ex2.htm
http://www.english-4u.de/past_tense_ex1.htm