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থিম নির্বাচন

আপনার পছন্দের থিম বেছে নিন।

Turn into the indirect form of speech. "How did you do that?" they said Edison.

A. They asked Edison how he had done that.
B. They asked Edison how had he done that.
C. They asked Edison how did he do that.
D. They asked Edison how that was done.
সঠিক উত্তরঃ A. They asked Edison how he had done that.
Explanation: