问题描述: where is the policeman He is s( ) the taffic on the road. 1个回答 分类:英语 2014-09-21 问题解答: 我来补答 supervise:vt.监督,管理;指导vi.监督,管理;指导superintendvt.监督;管理;主管;指挥vi.监督;主管;指挥故答案:supervising/superintending 展开全文阅读