A2- Unit 4 Mysteries

http://www.theonlinetestcentre.com/world-famous-places-landmarks.html

https://www.ecenglish.com/learnenglish/lessons/past-continuous-review

http://www.focus.olsztyn.pl/en-exercises-past-continuous-test-1.html#.WVI_WYSGPIU

http://www.englisch-hilfen.de/en/exercises/tenses/past_progressive_statements.htm

http://eslpuzzles.com/Grammar%20Games/Past%20Continuous%20Games/Past%20Continuous%20Pirate%20Grammar%20Game.html

http://www.eslgamesplus.com/past-progressive-past-continuous-past-simple-verb-tenses-esl-grammar-interactive-activity/