What prediction did you make after reading about Montresor's and Fortunato's shared intrest in wine
One might "predict" or see that the shared interest in wine might be an element of foreshadowing events to come. One should see that this shared interest in wine could be Montresor's way of getting Fortunato alone to exact his revenge that he speaks of. Montresor does not even have a cask of amontillado for Fortunato to taste from, but he knows the man to be a true connoisseur of wine so Montresor knows that this is a fail safe way to get Fortunato to go along with him to his estate. Montresor even plays to Fortunato's vanity about his connoisseurship by saying that he doesn't want to bother the man and that he'll ask Luchessi about the wine, knowing that Montresor will take offense and even more surely go with him to taste the amontillado to prove his expertise.
After reading about Montresor's and Fortunato's shared interest in wine, a prediction might be made that would lead the reader to expect that Montresor might use this at some point to entice Fortunato or to lure him into a situation that might be perfect for revenge, as he has indicated was his intention from the beginning.