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You got the answer right, but can't explain why?

Shin Sung-woo's Zeroing is an app that trains you by breaking down past Civil Service and PSAT questions into individual answer choices. The exam ultimately comes down to judging the correctness of five answer choices. However, most people just pick the correct answer and gloss over the rest. Those ambiguously skipped choices will hold you back in the exam room.

Just as you zero in a gun, aim precisely at each and every answer choice.

■ True/False Training by Answer Choice

We divide a past exam question into True/False cards for each answer choice. Since this training involves judging "why this answer choice is right / why it is wrong" one by one based on the original text, you build genuine skills rather than just guessing.

** ■ Included Past Questions

· Grade 5 PSAT Verbal Reasoning — All past questions from 2005 to 2026 (20 years)

· Grade 7 PSAT Verbal Reasoning — From 2021 to 2025

· Private Sector Career Verbal Reasoning — From 2011 to 2021

· Grade 9 National Civil Service Korean — From 2025 to 2026

※ The latest past questions will be continuously added for each exam.

■ Customized Training by Question Type

· Option True/False — Judging the correctness of each option based on the original text

· Argumentation — Logical reasoning to determine if it is necessarily true or if a conclusion can be derived

· Strengthening/Weakening — Evaluating whether the option strengthens or weakens the thesis

· Experiment/Logic Quiz — Interactive practice, just like solving on paper in a real exam

■ Original Text + Explanations

The passages are excerpted exactly as they appear in the original past exams, without any modifications. With explanations that pinpoint the evidence for each option and key summaries, you will firmly grasp why that particular answer is correct. ■ For these candidates

Students preparing for the Grade 5, Grade 7, Civil Service Recruitment, or Grade 9 exams who want to raise their accuracy in Verbal Reasoning and Korean by just one notch.

Starting today, try to fine-tune every single answer choice.