Using the gerund or the infinitive to complete the sentences

using the gerund or the infinitive to complete the sentences:
1. I never permit ...my diary
2. I learned...at the age of...
3. I can't help...when I see someone...treated unfairly
4. i don't practice...as regularly as I should
5. I sometimes pretend...when going to school
6. I always encourage...which I have enjoyed reading myself
7. I enjoy...even though i'm not very good at it
8. i expect...by the end of next year
9. My father has given up...
10. he often regrets...