PAST EVENTS AND PAST HABITS 2ND GRADE

http://www.grammar-quizzes.com/past1c.html


https://elt.oup.com/student/solutions1stedition/ui_unit_page/unit9/grammar/exercise1?cc=us&selLanguage=en

http://grammarworm.blogspot.mx/2014/03/used-to-would-past-simple-past-habits.html