Quiz in The Cask of Amontillado

The Cask of Amontillado 5
"two of the colossal supports of the roof of the catacombs,..."   (The Cask of Amontillado)

The "colossal supports" refers to what part of the setting that was already described?

"fourth side the bones had been thrown down, and lay promiscuously..."   (The Cask of Amontillado)

Review: What is this a hint or clue about; what does it hint that Montresor has done?

"putting on a mask of black silk..."   (The Cask of Amontillado)

Why does Montresor make a point of "putting on a mask of black silk"?

"cause to doubt my good will...."   (The Cask of Amontillado)

Why was Montresor careful to avoid giving Fortunato cause to doubt his "good will" toward Fortunato?

"struggled with its weight;..."   (The Cask of Amontillado)

What idea does struggling "with its weight" suggest about revenge?