3.
A: Please be quiet. I
busy.
B: Oh, sorry. But why
you busy?
A: Please be quiet. I
am
busy.
B: Oh, sorry. But why
are
you busy?
A: Á» Á¶¿ëÈ÷ ÇØÁÖ¼¼¿ä. ³ª ¹Ù»Ú°Åµç¿ä.
B: ¾Æ, ¹Ì¾ÈÇØ¿ä. ±×·±µ¥ ¿Ö ¹Ùºü¿ä?