Answer:
1) usted is the more formal version.It's used when referring to someone who is older.Tu is informa
The word 'shy' in Spanish is 'reservado' for a boy and 'reservada' for a girl. However, 'reservado' mean reserved, which is a synonym of shy. :)
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 ^.^
