Here are the completed sentences with the comparative forms of the words provided:

1. The Eagle team performed **more successfully** than the Lion team.
2. In the countryside, children play **more freely** than in the city.
3. My grandfather says that farmers in the past worked **harder** than farmers nowadays.
4. A sports car goes **faster** than an ordinary car.
5. A tourist travels **more responsively** than a business person.
6. Mr. Thompson does his tasks **more responsibly** than Mr. Dylan.
7. On Sunday, my children can get up **later** than usual.
8. Jane speaks **more slowly** than Jenny because her English is not very good.

Feel free to ask if you have any further questions!