- In the forest, last night, howled, the wolves.
- The wolves howled last night in the forest.
- Howled the wolves last night in the forest.
- In the forest howled the wolves last night.
The correct sentence structure in English is Subject-Time-Place-Verb. The subject (the wolves) should be followed by the time (last night), the place (in the forest), and finally, the verb (howled). The correct option (b) follows this structure.