Progresión 1 USED TO para describir costumbres o hábitos del pasado.
1. https://www.perfect-english-grammar.com/used-to-exercise-1.html
2. https://elt.oup.com/student/solutions/int/grammar/grammar_02_022e?srsltid=AfmBOooiJxaK_kXhwrFycEOVvu7twixKkm7mnQJp9SU5UFkw5hl_dJLJ&cc=mx&selLanguage=es
3. https://test-english.com/grammar-points/a2/used-to/
4. https://test-english.com/grammar-points/a2/used-to/2/
5. https://test-english.com/grammar-points/a2/used-to/3/
2. https://elt.oup.com/student/solutions/int/grammar/grammar_02_022e?srsltid=AfmBOooiJxaK_kXhwrFycEOVvu7twixKkm7mnQJp9SU5UFkw5hl_dJLJ&cc=mx&selLanguage=es
3. https://test-english.com/grammar-points/a2/used-to/
4. https://test-english.com/grammar-points/a2/used-to/2/
5. https://test-english.com/grammar-points/a2/used-to/3/
12. Vocabulary http://www.web-esl.com/family/family_ez.htm
15. Vocabulary https://agendaweb.org/exercises/vocabulary/jobs/occupations-2.htm?__r=1.f5cbf2da8f7bac834a4e2fea0aba9dc6