
These are tough ones in my opinion..

4) According to Interstudy, a nonprofit organization that studies health maintenance organizations (HMO's),
they estimate that, in comparison to last year, when only 36 percent of the nation's 607 HMO's was profitable, this year 73 percent will be.
(A) they estimate that, in comparison to last year, when only 36 percent of the nation's 607 HMO's was profitable, this year 73 percent will be
(B) compared to only 36 percent of the nation's 607 HMO's being profitable last year, they estimate 73 percent would be this year
(C) only 36 percent of the nation's 607 HMO's were profitable last year; it estimates that this year 73 percent will be
(D) it estimates 73 percent of the nation's 607 HMO's would be profitable this year; last year that was only 36 percent
(E) only 36 percent of the nation's 607 HMO's last year were profitable, whereas they estimate it this year to be 73 percent
5) According to scientists at the University of California, the pattern of changes that have occurred in human DNA over the millennia indicate the possibility that everyone alive today might be descended from a single female ancestor who lived in Africa sometime between 140,000 and 280,000 years ago.
(A) indicate the possibility that everyone alive today might be descended from a single female ancestor who
(B) indicate that everyone alive today might possibly be a descendant of a single female ancestor who had
(C) may indicate that everyone alive today has descended from a single female ancestor who had
(D) indicates that everyone alive today may be a descendant of a single female ancestor who
(E) indicates that everyone alive today might be a descendant from a single female ancestor who
6) According to some analysts, whatever its merits, the proposal to tax away all capital gains on short-term investments would, if enacted, have a disastrous effect on Wall Street trading and employment.
(A) its merits, the proposal to tax
(B) its merits may be, the proposal of taxing
(C) its merits as a proposal, taxing
(D) the proposal's merits, to tax
(E) the proposal's merits are, taxing
7) According to some economists, Japan is in danger of plunging into a depression that, with double-digit unemployment, could severely strain a society that regards lifetime employment as a virtual right of citizenship.
(A) that, with double-digit unemployment, could severely strain
(B) that, because of double-digit unemployment, could be a severe strain for
(C) with double-digit unemployment, and it could severely strain
(D) with double-digit unemployment and could be a severe strain
(E) with double-digit unemployment and could severely strain
8) According to some economists, the July decrease in unemployment so that it was the lowest in two years suggests that the gradual improvement in the job market is continuing.
(A) so that it was the lowest in two years
(B) so that it was the lowest two-year rate
(C) to what would be the lowest in two years
(D) to a two-year low level
(E) to the lowest level in two years