When "de" is followed by "el," it always becomes del . Example: Es del profesor (It is the professor's).
Based on shared academic materials from Valencia College and other institutions, here are the likely answers for the specific "Practice It" prompts: First Blank (Possession with 'de') Second Blank (Possessive Adjective) de la hermana de María 2 de los padres de Tomás 3 de Lupe y Miguel sus parientes 4 de la profesora su escritorio How to Master This Topic p219 estructura 1 de quien es practice it upd
These replace the noun entirely ( mío, tuyo, suyo, nuestro, suyo ). Example: El libro es mío (The book is mine ). Common Answer Key for P219 Estructura 1 When "de" is followed by "el," it always becomes del