GWD 1 太多语法题有争议了

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　（我选的）
3. a
        greater proportion than they have been　（答案）
4. which
        is greater than was so
5. which
        is greater than it has been

Rivaling the pyramids of Egypt
or even the ancient cities of the Maya as an achievement, the army of　terra-cotta warriors created to protect Qin Shi Huang, China’s first
emperor, in his afterlife is more than 2,000 years old and took 700,000
artisans more than 36 years to complete them.

B.    
took 700,000 artisans more than 36 years to
complete it

C.    
took 700,000 artisans more than 36 years to
complete

Q32:

To develop more accurate population forecasts, demographers have
to know a great deal more than now about the social and economic
determinants of fertility.

1. have
        to know a great deal more than now about the social and economic
2. have
        to know a great deal more than they do now about the social and economical
3. would
        have to know a great deal more than they do now about the social and
        economical
4. would
        have to know a great deal more than they do now about the social and
        economic
5. would
        have to know a great deal more than now about the social and economical