This worksheet covers four common stem changes (르, ㅎ, ㄹ and ㅡ) with the polite endings beginners use every day.
By the end, you can put 르, ㅎ, ㄹ and ㅡ stems into the right -아요/어요, -(으)세요 and -ㅂ니다 forms (for example 몰라요, 어때요, 사세요, 바빠요).
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