About this resource:
transacting for goods and services, considering concepts such as value, availability, competition and ethics, forexample, 세 시 전에 출발하는 버스가 있어요?; 환경보호 캠페인에 참가하고 싶은데 누구한테 연락해야 해요?
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http://rdf.australiancurriculum.edu.au/elements/2018/05/41fb49ff-c0e9-40a2-b40e-e8836ed48f89.rdf