____ she couldn’t understand was ____ fewer and fewer students showed interest in her lessons.
A. What; why
B. That; what
C. What; because
D. Why; that
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The traditional view is ____ we sleep because our brain is programmed to make us do so.
A. when
B. why
C. whether
D. that
A belief in science will____those tribes.
A. prevail among
B. prevailing
C. prevail over
D. prevalent
More often than not, those with numbers ____ those without.
A. prevail among
B. prevailing
C. prevail over
D. prevalent
The footprints are quite ____; they must be fresh.
A. distinct
B. distinctive
C. distinguish
D. distinction
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