gwd 1-16

joycesong

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.

a greater proportion than it was

a greater proportion than

C.     a greater proportion than they have been

D.    which is greater than was so

which is greater than it has been

这道题应该选什么啊， 为什么？？

SkyGrit

lz发帖前最好搜索以下别人的讨论，不过偶还是再解释一下：

1）it was虽然只有两个词，但均不对，it指代错误，was无所指代，只能用did；

2）省略，不会造成歧义，correct；

3）时态错误；

4）which指代错误；

5）时态，代词，以及which都是错误的；