Convert the given sentence into active/passive voice. **Convert the sentence provided below from its passive voice structure to an active voice structure: The national anthem was being sung by the choir when the lights went off.**

Options:

• A: The national anthem had been sung by the choir when the lights went off.
• B: The choir had sung the national anthem when the lights went off.
• C: The choir has sung the national anthem when the lights went off.
• D: The choir was singing the national anthem when the lights went off.

Related Practice Questions:

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