1. estoy
2. estás (add the accent over the a)
3. está (add the accent over the a)
4. estamos
5. están (add the accent over the a)
6. Yo <u>estoy</u> triste.
7. está
8.está
9.está
10. estamos
11. está
The best answer would be D, because it interests all of you.
If not D, then it would be C, but D is the most reasonable answer :)
I am Hispanic, so I'm not, "Just Guessing"