By practicing these exercises, you'll become more comfortable with using "de quién es" and its variations to ask about possession in Spanish.
: Possessive adjectives like su and sus must agree in number with the item being possessed, not the owner. Su libro (one book, regardless of how many owners). Sus libros (multiple books). p2-19 estructura 1 -de quien es -practice it -
: Use "¿De quién es...?" for singular items and "¿De quién son...?" for plural items. By practicing these exercises