Scarcely ______ seated in the lecture hall when the professor began the complex organic chemistry presentation.
Answer and explanation
Correct answer: D. had the students been
- Step 1: Apply negative inversion rule: Commencing with 'Scarcely' requires subject-auxiliary inversion.
- Step 2: The past perfect passive construction requires 'had' before the subject, followed by 'been seated': 'had the students been'.
Answer
had the students been.
Why not the others: 'the students were' and 'the students had been' lack inversion; 'had the students' omits the passive participle 'been'.
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