The academic senate expressed regret at ______ earlier to support the junior faculty members.

Answer and explanation

Correct answer: C. not having intervened

  1. Step 1: The preposition 'at' requires a gerund complement; negative perfect gerunds place 'not' before 'having'. 'Not having intervened' correctly denotes the failure to perform an action in the past prior to the regret. Answer: not having intervened. Why not the others: "not to intervene" uses an infinitive phrase, which cannot function as the object of preposition 'at'; "having not to intervene" places negation inside an awkward modal infinitive expression, distorting the meaning; "to not have intervened" uses a split perfect infinitive where a prepositional gerund complement is syntactically required.

Practise more Hypothetical Conditionals and Gerund Complements.

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