Hardly ______ the conference hall when the keynote speaker was introduced.
Answer and explanation
Correct answer: D. had we entered
- Step 1: When negative or restrictive adverbs such as 'hardly', 'scarcely', or 'barely' introduce a clause, subject-auxiliary inversion is mandatory. The past perfect structure requires 'had' before the subject 'we', followed by the past participle 'entered'. Answer: had we entered. Why not the others: "did we enter room" incorrectly uses the simple past auxiliary instead of the past perfect required by 'hardly... when'; "we had entered" fails to apply subject-auxiliary inversion after an initial restrictive adverb; "have we entered" incorrectly uses the present perfect to describe completed past sequence.
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More Subjunctive, Inversion and Cleft Structures questions
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