Put the verbs in brackets into the Present Perfect Active or Passive.
1) We (not to meet) this person before.
2) The letters (to type) already.
3) The fans (already/to inform) about the delay of the concert.
4) This singer (just/to release) his new album.
5) The leader of the folk group (already/to interview).
6) We (just/to read) the review of the performance.