A.teachers
B.workers
C.peasants
D.students
A.not so many as
B.as many as
C.much more than
D.much less than
A.professional
B.special
C.separate
D.comfortable
A.economical
B.medical
C.political
D.mathematical
A.under
B.below
C.with
D.over
A.why
B.that
C.how
D.what