Question

1) Post this letter at once.
2) Do hot make a noise
both sentences into passive voice.
don't spam either, I will report.
no need to answer if you don't know​

Answer 1

Answer:

The given active voice is 'Please post this letter. ' We begin the passive voice with 'You are requested' and then use 'to' to add the rest.

Answer 2

Answer:

let the letter be posted at once.

you are order not to make a noise.