Voice
Somebody should have cleaned the windows yesterday.

The windows should be cleaned yesterday.
The windows were not cleaned yesterday.
The windows had to be cleaned yesterday.
The windows should have been cleaned yesterday.

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Voice
The residents celebrated the Independence Day.

The Independence Day is celebrated by the residents.
Celebration of Independence Day was done by the residents.
The Independence Day has been celebrated by the residents.
The Independence day was celebrated by the residents.

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Voice
I saw him conducting the rehearsal.

He was seen by me to conduct the rehearsal.
I saw the rehearsal to be conducted by him.
He was seen conducting the rehearsal.
I saw the rehearsal being conducted by him.

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