Answer:
13. B.
14. D.
15. B.
16. B.
17. E.
18. D.
19. A.
20. C.
Step-by-step explanation:
When we must complete sentences it is very important to identify the person, the gender, the number and the time in which it is raised, in this way we can conjugate the verb in a logical way and that is consistent with what you want to express.