James Watt discovered the energy of steam.
Correct answer: B. The energy of steam was discovered by James Watt.
- A. The energy of steam has been discovered James Watt.
- B. The energy of steam was discovered by James Watt.
- C. James Watt was discovered by the energy of steam.
- D. James Watt had discovered energy by the steam.
Explanation
The original sentence is a statement about James Watt's discovery, and the correct reported speech uses the passive voice to convey the same meaning.
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