A: What year did you graduate?
    - 언제 졸업하셨어요?

B: I graduated in 2001.
    - 2001년에 졸업했어요.

A: You were my junior at school.
    - 제 학교 후배네요.
 
B: When did you graduate from school?
    - 언제 졸업하셨어요?