CONDITIONAL SENTENCES I and II TYPES

http://carmenmariaenglishblog.blogspot.com.es/2016/02/first-and-second-conditional-exercises.html


https://www.ego4u.com/en/cram-up/tests/conditional-sentences-2



http://www.esl-lounge.com/student/grammar/3g18-first-second-conditional-exercise.php

http://englishdiamantino4.blogspot.com.es/2012/02/first-and-second-conditionals.html