1Davidliveonthe的精选

问题详情：词汇；根据句意和提示写出单词，完成句子。1.Davidliveonthe____________(九)floorandhecanseeeverythingaroundverywell.2.B2CstandsforBusiness-to-___________(顾客),infactmostB2Ccompaniesareonlinesellers....