The conflict is that one of the characters wants revenge on the other man
The dialogue shows that Furtunato thinks Montrsor is playing a joke on him.
Answer:
Jeff and Sarah came to the sales presentation with Sam and I/me.
We received a thank-you note from her/she and a separate letter from him/he.
I ride to work each day with Alicia and him/he, and I ride home with they/them.
The engineer who/whom built the dam is pleased with the results.
The operation’s success depends, in part, on we/us.
Can’t you come along with me/I while I deliver paychecks?
William sent the card to her/she.
An order for ten thousand records was received from they/them.
Carol gave the wrenches to me/I yesterday, and I returned them to she/her after I used them.
Give the letters of application to we/us