The teacher asked the students whether they could tell the name of the man who _ steam engine.
Correct answer: B. Had invented
- A. Had been invented
- B. Had invented
- C. Has been invented
- D. Would be invented
Explanation
B is the correct option because this is active voice and past perfect tense. It correctly indicates that the man performed the action of inventing the steam engine in the past. It fits the context of the sentence, which asks about a historical fact.
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