- The horse won the race swiftly.
- The race won the horse swiftly.
- Swiftly won the horse the race.
- The horse swiftly won the race.
The correct sentence structure in English is Adverb-Subject-Verb-Object. The adverb (swiftly) should come first, followed by the subject (the horse), the verb (won), and finally, the object (the race). The correct option (a) follows this structure.
