https://agendaweb.org/exercises/verbs/to-be-past-simple.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=2023
http://s.mound.free.fr/skyblues67/simppast/wascloze.htm
http://www.englishexercises.org/makeagame/viewgame.asp?id=562
http://www.carmenlu.com/first/grammar/pastbe1_4a.htm
http://testy.mzs-vb.cz/spustit-test.php?id=34
http://www.englishexercises.org/makeagame/viewgame.asp?id=5133