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否定1
基礎知識學習
listening
spelling
comprehensive
Lesson 1
학생 · 선생님 · 의사 · 경찰 ...이/가...아닙니다
listening
spelling
comprehensive
Lesson 2
...이/가...아닙니다
情境故事練習
故事 - 閱讀
故事 - 說