Book 2 is the (difficult)..........................book.
the most difficult
Book 1 is (exciting)..........................than book 3.
more exciting
Book 2 is (difficult)..........................than book 3.
more difficult
Book 1 is the (exciting)..........................book.
most exciting
The sun is ... the coffee.
hotter than
The blue whale is (heavy)____________ animal in the world
the heaviest
