This is the 5876th most frequent Korean word.
붙을
"붙을" is the attributive form of "붙다," meaning "to stick" or "to adhere."
"붙을" in this sentence signifies adhering or attaching to a surface, specifically a wall.
벽에 붙을 그림을 준비하세요.
Prepare the picture that will adhere to the wall.
Here, "붙을" is used to describe the action of sticking or attaching to something in the future.
그네에 붙을 나뭇잎을 조심하세요.
Watch out for the leaves that will stick to the swing.
In this context, "붙을" expresses the act of passing an exam, where "붙다" means to pass or succeed.