Open the verified answer key. Do not just look at what the right answer is; trace why your incorrect answer failed. Was it a lack of vocabulary? Did you miss a constraint in the question prompt? Did you mishear a synonym in the audio?
Use a to mark clear errors (incorrect facts, missed listening cues).
In the HKDSE curriculum, "Set 3" in advanced practice books is often designed to be a . It usually appears after the foundational sets and represents a step up in difficulty, often mimicking the harder questions found in the actual public exams (such as the 2021 or 2023 DSE papers).