Naruto Season 1 Episode 21
Identify Yourself: Powerful New Rivals
After the three ninjas take their leave, Sasuke realizes he has a powerful rival out there. The next day, Kakashi announces that he has recommended all of them for the Chuunin Exams. While Naruto and Sasuke are pleased, Sakura is afraid of letting everyone down. Also, someone decides they aren't ready and decides to test their abilities.