Инфинитив или герундий. Урок английского языка

1. We enjoy danceto dancedancing.

2. Why not goto gogoing to the cinema tonight?

3. She was busy studyto studystudying for her exams.

4. The job involves prepareto preparepreparing reports for the managements.

5. He refused betrayto betraybetraying his friends.

6. I am looking forward to seeto seeseeing you again soon.

7. What about eatto eateating out tonight?

8. He swore never doto dodoing that again.

9. How dare you sayto saysaying that?

10. Let them goto gogoing.