Here are the suitable comparative forms for the blanks provided:

1. Towns are **bigger** than villages. (big)
2. A sofa is **more comfortable** than a chair. (comfortable)
3. Does an ox run **more slowly** than a horse? (slowly)
4. Laura sings **better** than her sister. (well)
5. My house is **farther** from Ha Noi than Nam's house. (far)
6. Minh plays the flute **more busily** than Quang. (busy)
7. Traffic in the city is always **harder** than it was last year. (hard)
8. This year the farmers work **more quietly** than towns. (quiet)
9. Villages are **happier** than towns. (happily)
10. People in this area live **more happily** than those in other areas. (happily)

Feel free to ask if you need anything else!