1) Name three things mentioned in the text that were taken into account for the study.
2) Which other languages are mentioned at the end of the article?
3) What is the plural form of the word ‘feliz’?
4) Find two examples of the pretérito perfecto in the text (haber + past participle of verb)
1) Everyday language, media, literature
2) Portuguese, English, Indonesian and French
4) ‘Ha demonstrado…’, ‘han creado…’