Explanation: "Casa" is feminine singular, so the -o adjective changes to -a: blanca.
Explanation: "Coches" is masculine plural, so the adjective takes -os: los coches rojos.
Explanation: "Hermanas" is feminine plural: alt + as = altas. The adjective agrees in both gender and number.
Explanation: Adjectives ending in a consonant (fácil) do not change for gender. Singular noun → singular adjective: una pregunta fácil.
Explanation: Consonant-final adjectives add -es in the plural: difícil → difíciles.
Explanation: A mixed masculine + feminine group always takes the MASCULINE PLURAL: altos.
Explanation: Spanish adjectives normally FOLLOW the noun: un libro interesante. Putting it before sounds literary or changes emphasis.
Explanation: "Películas" is feminine plural: aburrid + as = aburridas. After ser, the adjective agrees with the subject.