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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Which one the following is a correct passive for "Who is creating this mess?

A. By whom is this mess being created?
B. By whom has this mess been created?
C. By whom this mess been created?
D. Who has been created this mess?
সঠিক উত্তরঃ A. By whom is this mess being created?
Explanation: