Select the correct word(s) for the blank in the following sentence.
The _________ thing about the entire situation was that the door had been locked from outside of the room.

Question

Quizplus · Accepted Answer

We are comparing more than two things (the locked door versus the other strange events that occurred) so we need to use the superlative form of the adjective "mysterious."
To make the superlative form of an adjective:
Add -est to the end of any one-syllable adjectives (large → largest)
For adjectives ending in -y, change the -y to -i and add -est (happy → happiest).
use the form "most + adjective" if the word is more than two syllables long and does not end in -y (mysterious → most mysterious).
If we were only comparing two things, we would use the comparative form of the adjective. To make the comparative form of an adjective:
Add -er to the end of any one-syllable adjectives (large → larger).
For two-syllable adjectives ending in -y, change the -y to -i and add -er (tiny → tinier).
If the adjective is two syllables and does not end in "-y" OR if the adjective has three or more syllables, use the form "more + adjective" (exciting → more exciting).

Select the Correct Word(s) for the Blank in the Following