Past Tense of "to be" - WAS/WERE

SONG, TABLES AND EXERCISES:

http://basicenglishijl.blogspot.com/p/simple-past-of-to-be-form-to-be-in-past.html

https://www.englisch-hilfen.de/en/exercises/tenses/was_were.htm

http://www.grammar.cl/english-games/was-were-questions.htm