https://www.montsemorales.com/gramatica/AlltenseSw2all0.htm
https://www.montsemorales.com/gramatica/AlltenseSw2all1.htm
https://www.montsemorales.com/gramatica/AlltenseSw2all2.htm
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-67608.php
https://www.englisch-hilfen.de/en/exercises/tenses/mix2.htm
https://www.englishpage.com/verbpage/verbs30finaltest.htm
https://agendaweb.org/verbs/mixed_tenses-exercises.html
Game
http://www.bbc.co.uk/skillswise/game/en32tens-game-tenses-treasure-hunt
https://www.turtlediary.com/game/tenses.html