2.
A: Do you know if she sings well?
B: No,
.
A: Do you know if she sings well?
B: No,
I
don't
know
if
she
sings
well
.
A: ±×³à°¡ ³ë·¡¸¦ ÀßÇÏ´ÂÁö ¾Æ´ÑÁö ¾Ë¾Æ?
B: ³ ±×³à°¡ ³ë·¡¸¦ ÀßÇÏ´ÂÁö ¾Æ´ÑÁö ¸ð¸£°Ú¾î.