modas of deduction exercises

http://www.esl-lounge.com/student/grammar/4g3-modals-deduction-exercise.php
http://www.englishexercises.org/makeagame/viewgame.asp?id=2083
https://elt.oup.com/student/result/engint/a_grammar/unit07/7c_1?cc=global&selLanguage=en