Question

I had posted the letters
(voice change)​

Answer 1

Answer:

The letters had been posted by me.

Explanation:

The sentence is in past perfect tense,

Past perfect tense (active voice) :-

Subject + had + v³ + object

Here,

• subject - I
• V³ - posted
• object - the letter

Past perfect tense (passive voice) :-

Object + had + been + v³ + by + subject

=> The letters had been posted by me.

hope it helps.