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.
Mesera, quiero el tenedor, por favor. I believe this is the right choice because if in the table people is already eating with forks then it must be a dish where you need to use forks
aqui esta la respuesta. espera que esto ayude