https://www.lepointdufle.net/ressources_fle/present_avoir.htm
https://www.lepointdufle.net/ressources_fle/present_aller.htm
https://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-6330.php
https://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-25845.php