We have posted most of the invitations.
Choose the passive voice form of the following sentence:
We have posted most of the invitations.
(a) Most of the invitations were posted.
(b) Most of the invitations have been posted by us.
(c) The invitations have been posted by them.
(d) Most of the invitations have been posted
Answer: (b) Most of the invitations have been posted by us.