1. Do you mind to wait/waiting for a few minutes?
2. I've decided to study/studying Physics in Edinburg.
3.Have you finished to read/reading the report I gave you?
4. To learn a language, you have to practise to speak/speaking.
5. I promise to be/being more careful in the future.
6. Did you manage to see/seeing anything through the microscope?
7. I don't usually enjoy to do/doing experiments but today's was fun
8. Would ypu like to eat/eating before the film or afterwards?