I had posted the letters.(Change into passive)
AThe letters is been posted by me.
BThe letters has been posted by me.
CThe letters have been posted by me.
DThe letters had been posted by me.
AThe letters is been posted by me.
BThe letters has been posted by me.
CThe letters have been posted by me.
DThe letters had been posted by me.
Related Questions:
Change into Passive Voice:-
Jam tastes sweet.
Spot the error.
(a) When the military general was shot dead / (b)people were run / (c)here and there /(d) to save themselvses / (e) no error.