I can assure you I will arrange everything in time (2 passives)
You be assured (that) everything will be arranged in time
Poverty drove him to desperation.
He was driven to desperation by poverty
They will give you the answer next week.
You will be given the answer next week
Has someone repaired that chair yet?
Has that chair been repaired yet?
Someone blew a whistle three times.
A whistle was blown three times
I have sharpened the knives.
The knives have been sharpened (by me)
I hate people looking at me.
I hate being looked at (by people)
Somebody has locked the box and I cannot open it. (2 passives)
The box has been locked and cannot be opened
