Voice
In the following question, a sentence has been given in Active/Passive Voice. Out of the four/five alternatives suggested, select the one which best expresses the same sentence in Passive/Active Voice. Who is creating this mess?

By whom is this mess being created?
Who has been created this mess?
By whom has this mess been created?
By whom this mess is being created?

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Voice
You should open the wine about three hours before you use it.

Wine should be opened about three hours before use.
Wine should be opened by you three hours before use.
Wine should be opened about three hours before it is used.
Wine should be opened about three hours before you use it.

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