Which is ______, the sun or the moon?
big
biggest
more big
bigger
This book is ______ than that one.
interesting
interestinger
most interesting
more interesting
Which animal runs ______, a horse or a rabbit?
fast
fastest
faster
more fast
The weather today is ______ than yesterday.
worst
more bad
worse
bad
My sister is ______ than me.
more tall
tall
tallest
taller
This problem is ______ than the last one.
more difficult
difficulter
difficult
most difficult
Which is ______, an elephant or a whale?
more heavy
heavier
heaviest
heavy
The movie was ______ than I expected.
good
more good
better
best
Which language is ______ to learn, English or Chinese?
easier
more easy
easy
easiest
His new car is ______ than his old one.
more expensive
expensive
expensiver
most expensive