Please help! Brainliest and 19 points!

Answer: for the first 7 is
1) Preparo, prepararon
2) comio, comeran
3) sirvio, sirvieron
4) dio, dieron
5) estuvo, estuvieron
6) fue, fueron
7) i actually don't know sorry
for the other part is the same thing just add "no" at the beginning
HOPE THIS HELPS YOU
Explanation: