Answer: A) More impatient.
Explanation for this question is being written.
Answer: B) Harder
Answer: B) Add-er to short adjectives and use more with longer adjectives.
Answer: B) Happier
Answer: B) More quietly.
Answer: D) Better
Answer: B) Thin => thiner.
Answer: A) More correct.
Answer: A) More dangerous than.
Answer: A) Too young.
Answer: A) More intelligently.
Answer: B) Slower
Answer: A) Double the final consonant before adding-er.
Answer: B) Better
Answer: A) Bigger than.
Answer: A) Most outgoing.
Answer: A) Fresher, freshest.
Answer: B) As expensive as.
Answer: A) Longer
Answer: A) The shopping centre is more modern than the market.
Answer: B) Nearer
Answer: C) Taller than.
Answer: D) More slowly.
Answer: A) Harder
Answer: A) More
Answer: A) Later
Answer: C) More
Answer: B) More beautiful.
Answer: B) More difficult.
Answer: B) More expensive than.
Answer: A) More smarter.
Answer: B) More colourful than.
Answer: B) Scarier
Answer: C) Very greatly.
Answer: B) More comfortable.
Answer: C) The+adjective+est
Answer: C) Harder
Answer: D) Higher, highest.
Answer: C) As expensive as.
Answer: B) More crowded.
Answer: C) Than
Answer: D) More exciting.
Answer: A) The easiest.
Answer: D) Less fluently.
Answer: A) Cheaper/more delicious.
Answer: A) Stickier $\rightarrow$ stickiest.
Answer: D) Less
Answer: D) The happiest.
Answer: A) Completely
Answer: C) Easier
Answer: B) Fewer
Answer: A) More confidently.
Answer: C) Havier than.
Answer: A) When comparing two things.
Answer: B) False
Answer: C) More expensive.
Answer: B) Less
Answer: B) More acceptable.
Answer: A) Bigger
Answer: B) Older
Answer: B) More gracefully.