Answer: It looks like you just need to cut off the last vowel (and consonant if there is one) of the word.
For number one, it's "perezosísimo"
For question 2, it's "aburridísimo"
For question 3, I think you do the same but keep it plural, so "interesantísimos" I would imagine.
Both of them are correct. You did it right.
Answer:
The Answer Would Be The Day Of The Dead Which Is Celebrated In Mexico And In America
Explanation: