과천외고 1학년 영미문학: 복선과 우연한 세부를 뒤 사건으로 검산하기 실전문제

At dusk, Lila put a copper key under the lamp. She heard a loose floorboard creak on the way upstairs. At dawn her brother was locked in the tool room. Lila took the key, unlocked the room, and led him out. The floorboard did not break.

The third stair shivered under Ada's foot on Monday. She told no one. On Friday, while carrying water upstairs, she saw the stair crack. She crossed by gripping the rail. A blue cloth on the door remained untouched throughout.

Early in the story, Ren found a small key beneath the clock. Later, a locked attic held dry blankets for flood victims. Ren tried the key, but it did not fit. She opened the attic by lifting the latch with a ruler. The old stair still broke beneath her.

At the station, Tessa noticed a red scarf tied to a bench. She later followed her friend's spoken directions to a safe exit. After the journey, she found the scarf still tied to the same bench. In a revised version of the story, her friend had tied that scarf to mark the safe exit before the journey began.