4. A: I have to buy . (chair)
B: I know a good place to go.
A: I have to buy a chair. (chair)
B: I know a good place to go.
A: ³ª ÀÇÀÚ¸¦ »ç¾ß ÇØ.
B: °¥¸¸ÇÑ ÁÁÀº °÷À» ¾Ë¾Æ.