when to double consonants

https://www.aprendeinglessila.com/2014/04/doblar-consonantes-en-ingles/

Formatting and styling text

Read the following text and see if you can understand the words in bold.

https://secure3.eslpod.com/podcast/esl-podcast-608-formatting-text/

Listening: Phone Conversation

https://www.esl-lab.com/meet/meetrd1.htm

Listening: Answering Machine

https://www.esl-lab.com/phone/phonerd1.htm