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concernedthathehasnospecialknowledgeinbussinessmanagement,Mikeplanstogainthenecessaryskilllsbytakingapart-timecourse.填concerning还是concerned说明原因越详细越好.

题目详情
concerned
____that he has no special knowledge in bussiness management,Mike plans to gain the necessary skillls by taking a part-time course.
填 concerning 还是 concerned 说明原因 越详细越好.
▼优质解答
答案和解析
concerned,sb.be concerned that