Question: When do the interns become residents in grey's anatomy?
Disambiguated questions and answers: question: What is the name of the episode in which interns become residents in Grey's anatomy?
In which episode do the interns become residents in Grey's anatomy?
What is the air date of the episode when the interns become residents in Grey's anatomy?
answer: A Change is Gonna come
Season 4 Episode 1
September 27, 2007
Natural Questions answer: fourth season premiere (from the Wikipedia article "A Change Is Gonna Come (Grey's Anatomy)")