Answer:
I THINK it might be all of the above, because none of those are past tense. I'm not sure though, don't count on me.
Explanation:
1 estás
2 estoy
3 eres
4 soy
5 estoy
6 son
7 son
8 está
9 es
10 estoy
11 ser
12 está
13 es
14 el
15 es
16 está
17 estamos
18 está
i did my best se if that works :)
