A
We haven't cleaned the house for weeks.
The house hasn't been cleaned by us for weeks.
They are going to open a new supermarket next week.
A new supermarket is going to be opened by them next week.
Someone has just found her.
She has just been found by someone.
They are going to close the factory.
The factory is going to be closed by them.
They discuss important subjects at lunchtime every day.
Important subjects are discussed by them at lunchtime every day.
You must clean the house.
The house must be cleaned by you.
Will they publish her new book next month?
Will her new book be published by them next month?
They had finished the work by the end of 1997.
The work had been finished by them by the end of 1997.
They couldn't use the car because the garage was servicing it.
The car couldn't be used by them because it was being serviced by the garage.
They are still considering this matter.
This matter is being considered by them.
When did he make this mistake?
When was this mistake made by him?
They were making every effort to end the strike.
Every effort was being made by them to end the strike.
How often do your teachers ask you that question?
How often are you asked that question by your teachers?
Will you have finished the project by Friday?
Will the project have been finished by you by Friday?
Are you also going to fix the air conditioner?
Is the air conditioner also going to be fixed by you?