1. high -> higher
dirty -> dirtier
long -> longer
happy -> happier
short -> shorter
slim -> slimmer
strong -> stronger
far -> further
tall -> taller
lazy -> lazier
old -> older
safe -> safer
2. a) A Ferrari is faster than a van.
b) London is more famous than Bristol.
c) A whale is heavier than a shark.
d) Canberra is younger than Ottawa.
e) Detective stories are more interesting than love stories.
