GWD31-14-16

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

   Answer: B

不同意B，认为than后面应该补全被比较的事物，所以应该选A。it 指代 the proportion,请大家指正