Question

who invented the medicine of Corona virus ? (voice change)​

Answer 1

Corona virus medicine was invented by whole?

Answer 2

$\huge\red{\tt{\underline {Correct\:Answer\::}}}$

By whom was the medicine of Corona virus invented ?

Extra Information ↴

If the active sentence begins with a 'Who', then the passive sentence will start with 'By whom'.

Example : Who broke the plot ? (active voice)

=> By whom was the plot broken ? (passive voice)

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