按成本會計制度分類，成本會計分為()。
Itisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
Whathesaidinthemeeting_______everybodypresent.
Thisriverformsanatural_______betweenChinaandKorea.
He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
