Analyzing campaign expenditures, the media has had as a focus the high costs and low ethics of campaign finance, but they have generally overlooked the cost of actually administering elections, which includes facilities, transport, printing, staffing, and technology. - Analyzing campaign expenditures, the media has had as a focus
- Analyses of campaign expenditures by the media has been focus on
- In analyzing campaign expenditures, the media have focused on
- Media analyses of campaign expenditures have had as a focus
- In their analysis of campaign expenditures, the media has been focusing on
答案是C，可是为什么用have呢？请大家帮忙 | 
