Social Science is MORE BORING/ MOST BORING than Art
MORE BORING
Abby is the DIRTIER / DIRTIEST of all
DIRTIEST
Maths is MORE DIFFICULT/ MOST DIFFICULT than Natural Science
MORE DIFFICULT
Climbing is MORE DANGEROUS/ MOST DANGEROUS than motocross
MORE DANGEROUS
Tigers are BIGGER / THE BIGGEST than Cats
BIGGER
Elephants are THE BIGGEST / BIGGER.
THE BIGGEST