Réponse :
1: Had 2: Read 3: communicated 4: ordered 5: Met 6: Asked 7: called 8:contacted 9: Checked 10: turned. 11: studied 12: Went. 13: Helped. 14: Took
Explications :
C'est très simple, pour les verbes irréguliers tu dois les apprendre par coeur, les autres tu rajoute -ed en terminaison ! ;)