4-1 Mis responsabilidades escolares: https://quizlet.com/461288439/capitulo-4-1-flash-cards/
4-2 comparaciones, conocer, adjetivos: https://quizlet.com/462376696/capitulo-4-2-comparisons-of-people-and-places-that-we-know-flash-cards/
4-3 Direct object pronouns practice (act. 1,2,3): https://personal.colby.edu/~bknelson/SLC/DO_IO.html