Инфинитив или герундий. Урок английского языка

1. My friend is afraid of flyto flyflying.

2. I am glad seeto seeseeing you.

3. Give up smoketo smokesmoking.

4. She was busy studyto studystudying for her exams.

5. We asked her repeatto repeatrepeating her question.

6. I am looking forward to hearto hearhearing from you soon.

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

8. He swore never doto dodoing that again.

9. How dare you sayto saysaying that?

10. She got an offer workto workworking in Canada.