Инфинитив или герундий. Урок английского языка

1. We go swimto swimswimming every week.

2. It is difficult answerto answeranswering the question.

3. I am interested in learnto learnlearning karate.

4. I told him shutto shutshutting up.

5. I am used to getto getgetting up early.

6. He refused betrayto betraybetraying his friends.

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

8. Do you mind opento openopening the window?

9. Let them goto gogoing.

10. Can you feel the spider crawlto crawlcrawling up your back?