- The workers quickly constructed the building.
- The building quickly constructed the workers.
- Quickly constructed the workers the building.
- The workers constructed quickly the building.
The correct sentence structure in English is Adverb-Subject-Verb-Object. The adverb (quickly) should come first, followed by the subject (the workers), the verb (constructed), and finally, the object (the building). The correct option (a) follows this structure.
