과천외고 3학년 수능 영어: unless 예외 조건이 결론을 어디까지 바꾸나 실전문제

The footbridge opens at dawn unless the river rises above the red marker. The water was below the marker at midnight, but no dawn reading is available.

Reservations remain valid unless a visitor cancels before Friday. The only way to cancel is to submit a form. On Thursday Sora asked whether she could cancel, but she sent no cancellation form.

The device works reliably in dry air unless dust blocks its inlet. The team has not tested it in rain. In a dry chamber, the inlet remained clear.

A permit is renewed each June unless a safety review finds a serious fault. This year the review began late; its result has not been filed.

Most seedlings survived unless the soil stayed flooded for two full days. The west bed flooded for one day and the east bed for three days. The researchers did not count survivors in either bed.