(A) before he shot and killed --- ( Verb sequence proper ) ( correct answer)
(B) before the shooting and killing of - (usage of "he" is necessary to make the sentence sensible)
(C) before he had shot and killed --- ( unnecessary use of had , as the sequence of events is clear with the usage of "before")
(D) prior to when he shot and killed --- ( awkward & usage of "he" is necessary to make the sentence sensible )
(E) prior to the shooting and killingof[/quote]
...
(B) before the shooting and killing of - (usage of "he" is necessary to make the sentence sensible)
(C) before he had shot and killed --- ( unnecessary use of had , as the sequence of events is clear with the usage of "before")
(D) prior to when he shot and killed --- ( awkward & usage of "he" is necessary to make the sentence sensible )
(E) prior to the shooting and killingof[/quote]
...








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