Listening
- https://agendaweb.org/listening/elem_interm.html
- http://www.elllo.org/english/beginner/index.htm
- https://learnenglish.britishcouncil.org/skills/listening/advanced-c1
- https://www.talkenglish.com/listening/listenadvanced.aspx
Speaking and Pronunciation
- http://www.bbc.co.uk/learningenglish/english/features/pronunciation/introduction
- https://ttsdemo.com/
- https://www.fluentu.com/blog/english/how-to-improve-english-pronunciation/
- http://www.bbc.co.uk/learningenglish/english/features/pronunciation/introduction
Writing and Vocabulary
- http://learnenglishteens.britishcouncil.org/skills/writing
- https://learnenglishteens.britishcouncil.org/skills/writing/advanced-C1-writing
- https://www.thoughtco.com/idioms-and-expressions-in-context-1210332
Videos
- Alejandro Lopera YouTube channel
- Amigos ingleses YouTube channel
- https://www.ted.com/
- https://www.bbc.co.uk/ideas/
Different skills
Dictionaries
Niveles C
Prensa
- https://www.bbc.co.uk/learningenglish/
- https://www.theguardian.com/education/series/learning-english
- https://edition.cnn.com/
- https://www.aljazeera.com/
- https://www.irishtimes.com/
- https://www.scotsman.com/