On the first day of high school Jonah woke up early and ate a healthy breakfast before catching the bus at 7:30. He was relieved to see the familiar face of his old friend, Robert, who lived three blocks away on Seventh Street. The two friends sat together on the bus and talked about their summer vacations. When they finally arrived at the school they walked in together and looked around as they began navigating the hallways. Because neither of them was exactly certain where to go, they asked a teacher in the hall, who pointed them in the right direction. Both boys were going to be in Mrs. Henderson's homeroom class, which was good news. The bad news was that her class was all the way over in the distant C halls. The boys would have to hurry to get there on time, as it seemed a very bad omen to be marked late for homeroom on the very first day of high school!
Which sentence can be added to this paragraph to develop the characters through reflection?