107. The geologist speculated that eons ago, before the area was ______ , the present-day island was actually a hilltop in a vast forest.
A. inundated
B. situated
C. rejuvenated
D. supplanted
E. excavated

108. The new vaccine is ______ preventing certain forms of pneumonia and should, therefore, be more widely ______ in order to prevent outbreaks of the disease.
A. required for, constrained
B. unsuccessful in, distributed
C. instrumental in, reconstituted
D. effective in, administered
E. unverified for, disseminated

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