Bold answers:
Es mejor que prevengas la gripe con una vacuna. Es importante que tengas una buena alimentación. Es verdad que los doctores siempre tienen razón. Es evidente que este programa ayuda a muchas personas. Es necesario que descanses para ponerte bien. No es cierto que las medicinas lo curen todo.
<h3>Translation</h3>
It is better to prevent the flu with a vaccine. It is important that you have a good diet. It is true that doctors are always right. It is clear that this program helps many people. It is necessary that you rest to get well. It is not true that medicines cure everything.
Answer:C: the number of the noun
Explanation:
When we use possessive adjectives like tu, tus, mis etc we are matching them with the number of the noun, plural or not, example,
"Tus calcetines"
TUS is a plural possesive adjective and calcetines is the plural noun of calcetin
"TU calcetin"
TU is singular, and calcetin is a singular noun
The correct answer is: Las tres y dies