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Expert replies
by arghya05 » Wed Jul 20, 2011 8:00 am
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. a greater proportion than it was
B. a greater proportion than
C. a greater proportion than they have been
D. which is greater than was so
E. which is greater than it has been

i cannot understand why c is wrong they refers to costs
i have a serious problem in comparison where subject is used after than or that of or those of are used after than

the shares rose 20 % the value in may than june
the shares rose 20 % the value in may than it do in june
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Source: — Sentence Correction |

by vineeshp » Wed Jul 20, 2011 8:07 am
C. a greater proportion than they have been - We are talking about a greater propotion which is refering to the spending. Television costs only contributed to that extra spending. So it is impossible to use they.

For your 2nd question, the correct unambiguous way of putting it is
The value of shares rose 20% more in May than it DID (rose) in june.
Vineesh,
Just telling you what I know and think. I am not the expert. :)
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