Circle the correct form of the verb

Circle the correct form of the verb. 1) Animals in the Zoo are fed/have been fed twice a day. 2) The wails of the hall were painted/have been painted thereedays aqo. 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.