https://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-14395.php
http://w3.restena.lu/amifra/exos/conj/subj3.htm
http://www.ralentirtravaux.com/lettres/exercices/troisieme/subjonctif/subj_passe.htm
https://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-62823.php