Answer:
Spanish adjectives correspond as masculine and feminine. For example, white house is casa blanca, not blanco. Also, in spanish, adjectives come BEFORE THE NOUN,not after like in english. Just like above,for white house you're going to say casa blanca, not blanca casa
The correct answer is: "Es preciso que uses sombrero"
In english (if needed): Pamela: "How can I protect my face from sunburn?" Roberto: "It's necessary to wear a hat."
Hoped I helped ^.^
