请教下ＧＷＤ１中的一道Ｔ

我在飞

GWD1-Q16:

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

 

1. a greater proportion than it was

2. a greater proportion than

3. a greater proportion than they have been

4. which is greater than was so

5. which is greater than it has been

   答案是Ｂ，可我觉得Ａ比较靠谱些，请教哪位大侠帮忙解答下啊！

cathyzq

我在这道题目上也不是拿的很准，但是后来我自己是这样分析的，你可以看一下

1992的已经用了过去时，那IN PREVIOUS ELECTION过去的过去，那即使要加的话也是

a greater proportion than it had been 选项没有

故此选最优，就是B了

georgetseng

it指代"costs"错误；"was"错误。
把句子简化、变化一下就清楚了: Television costs accounted for a greater proportion (of spending in presidential campaigns) than (they did) in any previous election.
所以选B)

我在飞

是哦，应该用复数的嘛

谢ＬＳ的了