Réponse:
We have recommended : we recommended
We have chosen : we chose
Has been telling the time and ringing its bells : was telling the time and ringing its bells
it has appeared : it appeared
has become : became
Explications:
Pour les verbes réguliers tu as juste à enlever l'auxiliaire HAVE. Pour les verbes irréguliers il faut prendre le prétérit (la 2e colonne du tableau des verbes irréguliers)