exercise1
cheap → cheaper → cheapest
fit → fitter → fittest
exciting → more exciting → most exciting
cool → cooler → coolest
late → later → latest
dangerous → more dangerous → most dangerous
small → smaller → smallest
popular → more popular → most popular
happy → happier → happiest
boring → more boring → most boring
exersice2
old → older → oldest
bad → worse → worst
difficult → more difficult → most difficult
large → larger → largest
good → better → best
big → bigger → biggest
easy → easier → easiest
much → more → most
little → less → least
interesting → more interesting → most interesting