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using a range of sentence enders and understanding their differences in meaning and appropriateness to the context,for example, -잖아요, -(으)ㄹ래요, -(으)ㄹ까요, -(으)ㅂ시다, -(으)ㄴ/는데요, -지요
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http://rdf.australiancurriculum.edu.au/elements/2018/05/f02d1cc6-0bee-4fdb-ba03-4ea290e33a0e.rdf