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?