Kline, Danielle

 Instant access to companion web site using web codes found in textbook.  Contains tutorial practice for vocabulary and grammar, internet links and activities, vocabulary and grammar lists, chapter self-tests.    

http://www.colby.edu/~bknelson/SLC/pret_imp.php  

http://www.colby.edu/~bknelson/SLC/pret_irregtrans.php

https://www.spanishdict.com/quizzes/64/preterite-vs-imperfect-in-spanish