If you found the previous text easy and made zero to very few mistakes, please refer to the link below for C1 Advanced reading text/exercises.
What: do the exercises
How: click on the following link: https://learnenglish.britishcouncil.org/skills/reading/advanced-c1/horror-film-clich-s
Time: it should take you less than 20 minutes
Finished: you have now improved you reading skills and know more about Halloween.
Done: go to the slide with the evaluation