gwd-1-16

annadai

GWD1--16

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.

B,a greater proportion than

C, a greater proportion than they have been

E, which is greater than it has been



The answer is C, But I think it shoud use past tense. what do you guys think?

joe11

FYI:

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=56794