Question

change to passive voice . they should post the later​

Answer 1

Answer:

Post this letter change it into the passive voice

if yo.

wiil get the answer then it send it to me.

have you got your answer.

you have written good status in your profile.

if the object is there in the active voice and u have to convert it into passive then use by. But if the object is not given or it is not clear then there is no need to use by.

Answer 2

Answer:

The letter shold be posted by them.

Explanation:

Hope it helps you

Have a good.day