4.
A: What was your job before?
B: I
a secretary.
A: What was your job before?
B: I
used
to
be
a secretary.
A: Àü¿¡ Á÷¾÷ÀÌ ¹¹¿´¾î¿ä?
B: ¿¾³¯¿£ ºñ¼¿´Áö¿ä.