You should not replace the roof.
The roof should not be replaced.
Somebody took my notebook.
My notebook was taken.
She had finished the work by the end of 1997.
The work had been finished by the end of 1997.
They discuss important subjects at lunch time everyday.
Important subjects are discussed at lunch time everyday.
They have already mended the TV set.
The tv set has already been mended.
We haven't cleaned the house for weeks.
The house hasn't been cleaned for weeks.
The police have just arrested two thieves.
Two thieves have just been arrested.
My parent's told me not to talk to strangers.
I wasn't told not to talk with strangers.
They sell this food in every shop.
This food is sold in every shop.
Anybody didn't make the lunch yesterday.
The lunch wasn't made yesterday.
People will need public transport.
Public transport will be needed.
They are going to open a new supermarket next week.
A new supermarket is going to be opened next week.
People are spending less money this year.
Less money is being spent this year.
We painted the car.
The car was painted.