3. Nick was pretty impressed with Gatsby in the first place. He thought he was easy-going, interesting and down to earth. And also he was surprised that Gatsby almost did not talk to people at his own parties and did not drink.
5. Most of the time that he is at Gatsby’s party, he observes people. And he notices that most of the people are wealthy businessmen but they all are fake because they come to the parties just to show off.