Understatement: is irony (laugh) of something that is pitiful.
Answer: A) they're showing the movie "don't turn out the lights" in a dark theatre.
Because, the movie is telling them to not turn off the lights in the theatre.
B) I think the ushers might question a grocery bag of candy under your sweater, as you can't trust a man will candy.
1) <em>The damp ground of the catacombs of the Montresors: </em>this phrase describes a dark place, it makes the audience feel anxious about what is going to happen in the catacombs.
<em>2) -"I drink," he said, "to the buried that repose around us."
</em>
<em>-"And I to your long life."</em>
This dialogue, not only makes the reader feel like a witness but also has an ironical effect, in which he/she can find it funny despite being terrifying.
3) <em>A moment more and I had fettered him to the granite:</em> it intensifies the dramatic irony present in the whole short story.
4) <em>A low moaning cry from the depth of the recess:</em> the words that Poe used to describe the desperation of Montresor makes the reader feel like the very character: confused, anxious, fearful.
The answer to the above question is the "nonessential past participial phrase". <span>It is nonessential, meaning that if it wasn't there the sentence would still make sense and it is in past tense.</span>
Answer:
The secret agents, disguised in civilian clothes, managed to easily <u>blend</u><u> </u>in with the crowd and get downtown