Circle the correct form of the verbs.
1) Animals in the Zoo are fed have been fed twice a day.
2) The walls of the hall! were painted have been painted three days ago
3) The building of this bridge is finished will be finished in a month.
4) The dinner was just cooked /has just been cooked.
5) The letters are delivered /have been delivered to our office every day.
6) The invitations weren't sent/ haven't been sent yet.