Conjugating a verb? That's what I would call it, but honestly, not hundred percent sure what you are talking about.
Answer:
.
Explanation:
the best answer would be " <em>quiere</em>
1. fuimos
2. vivió
3. existieron
4 era
5. se destacaba
6. estudiaban
7. calculaban
8. vimos
9. calculamos
10. pesaba
11. tenían
12. tenían
13. aprendimos
