Answer:
In this exercise we have to choose the word that does not belong to each group.
Explanation:
1. activo sedentario flexible fuerte: the word that does not belong to this group is sedentario (sedentary/inactive) and all the others are sinonyms of activity.
2. adelgazar disfrutar engordar estar a dieta: the word that does not belong to this group is disfrutar (enjoy) all the others are words related to dieting.
3. la merienda la proteína las vitaminas los minerales: the word that does not belong to this group is merienda (snack), all the others are related to food properties.
4. aliviar el estrés engordar llevar una vida sana mantenerse en forma: the word that does not belong to this group is engordar (to get fat). all the others are words related to healthy activities
5. apurarse calentarse entrenarse hacer gimnasia the word that does not belong to this group is apurarse (to hurry up) all the others are related to exercise activities.
I hope this helps:
9. José (compra) un DVD en la tienda.
10. Él (mira) el DVD en la sala.
11. Un alumno bueno (presta) atención cuando el profesor habla.
12. Ella (lleva) uniforme a la escuela.
13. Elena (escucha) su música favorita.
14. El profesor (toma) un examen hoy.
15. ¿Adónde (va) tu amigo?
http://www.spanishdict.com/
This is a tool you can use to help with conjugation and the like.
