Acaban de escribir la carta.
C is the correct answer for this question. Guilt can hide what people want to do and prevent them from doing it ever again.
'himself' is a reflexive pronoun
Korean is classified as one of the hardest languages to learn so I highly don’t recommend teaching it to yourself, but you can use apps for language learning and you can watch online free videos. You can also purchase self teaching lessons or Rosetta Stone resources.
Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.