Answer: A) The most expensive.
Explanation for this question is being written.
Answer: B) Maria sings more beautifully than Chloe.
Answer: D) D
Answer: B) MORE in front of the adjective (example:more beautiful).
Answer: A) Friendlier
Answer: C) MORE EASILY.
Answer: A) Fewer
Answer: B) It's too dangerous to swim here.
Answer: B) More peaceful.
Answer: D) Enough warm.
Answer: A) The most expensive / cheaper.
Answer: B) Nile is longer than any other river in the world.
Answer: A) More and more people.
Answer: C) More safely.
Answer: C) Funnier
Answer: C) Much better.
Answer: D) Better
Answer: D) Brighter / more colorful.
Answer: B) Most colorful and elaborate.
Answer: D) Harder
Answer: B) Harder
Answer: D) Less
Answer: A) More
Answer: C) More carefully.
Answer: B) Better and better.
Answer: A) Yummier $\rightarrow$ yummiest.
Answer: B) The most expensive.
Answer: A) More gracefully.
Answer: A) Earliest, older.
Answer: B) Worse
Answer: A) Bigger, biggest.
Answer: C) More cautiously.
Answer: B) Dance better than everyone.
Answer: A) More difficult.
Answer: C) More dangerous than.
Answer: B) This test is easier than the last one.
Answer: C) More expensive.
Answer: A) Easier
Answer: B) Much
Answer: B) False
Answer: C) Er
Answer: D) More loudly.
Answer: C) More angrily.
Answer: C) More often.
Answer: C) Happier/ happiest.
Answer: C) Redder
Answer: B) By far the tallest.
Answer: A) More boring.
Answer: A) Bigger
Answer: B) Larger
Answer: B) Faster
Answer: C) More crowded.
Answer: C) More difficult.
Answer: C) Is equal to =.
Answer: A) Colder
Answer: A) Shorter
Answer: A) More amazing.
Answer: A) More / most.
Answer: D) The new restaurant is the goodest place to eat.