3.
A: Does he know us?
B: Yes,
knows
, but
don't know
.
A: Does he know us?
B: Yes,
he
knows
us
, but
we
don't know
him
.
A: ±×°¡ ¿ì¸®¸¦ ¾Ë¾Æ?
B: ÀÀ, ±×´Â ¿ì¸®¸¦ ¾ËÁö¸¸ ¿ì¸° ±×¸¦ ¸ô¶ó.