__________ their own public relations staffs, some companies hire a few specialists from abroad. 除了自己的公关人员外，有些公司还会雇一些国外的专家。
A.Regardless B.Except C.Without D.In addition to正确答案D
__________ their own public relations staffs, some companies hire a few specialists from abroad. 除了自己的公关人员外，有些公司还会雇一些国外的专家。
A.Regardless B.Except C.Without D.In addition to正确答案D
