The police questioned George.
George was questioned by the police.
(Active: The subject "the police" is doing the action to the object "George". In the passive voice, the object becomes the subject, and the focus is on George.)

Millions of people watch this programme.
This programme is watched by millions of people.
(Active: The subject "millions of people" performs the action on the object "this programme". In the passive voice, the object "this programme" becomes the subject.)

They will finish our new house at the end of the month.
Our new house will be finished at the end of the month.
(Active: The subject "they" is performing the action. In the passive voice, "our new house" becomes the subject, and "will be finished" is the passive form.)

They've elected a new president.
A new president has been elected.
(Active: The object "a new president" is the focus of the action. The passive form uses the present perfect "has been elected".)

They're rebuilding the damaged stadium.
The damaged stadium is being rebuilt.
(Active: "They" are doing the action of rebuilding. In the passive, the object "the damaged stadium" becomes the subject, and "is being rebuilt" expresses the ongoing action.)

They've closed the mountain road.
The mountain road has been closed.
(Active: The object "the mountain road" becomes the subject in the passive voice, and the present perfect tense is used here.)

Students write most of this magazine.
Most of this magazine is written by students.
(Active: The subject "students" writes "most of this magazine". In the passive voice, "most of this magazine" is the subject.)

A burglar stole my laptop.
My laptop was stolen by a burglar.
(Active: The object "my laptop" becomes the subject, and "was stolen" is the past passive form.)

Somebody will meet you at the bus station.
You will be met at the bus station.
(Active: The subject "somebody" is performing the action. In the passive voice, "you" becomes the subject.)

United won the cup last year.
Last year the cup was won by United.
(Active: The subject "United" won "the cup". In the passive voice, "the cup" becomes the subject, and "was won" expresses the past action.)