I got a terrible headache today, and my pain __________ apparent, for the moment I walked into my office this morning, the first man I met asked sympathetically.
A. must be
B. had to be
C. had been
D. must have been
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For him to be reelected in the election year, what is essential is not whether his policy works but whether the public believe that it __________.
A. does
B. is
C. do
D. are
As is known to us, human behavior is mostly a product of learning, __________ the behavior of animals depends mainly on instinct.
A. whenever
B. whether
C. whichever
D. whereas
The goal of the university is to make higher education available to everyone who is willing and capable __________ his financial conditions.
A. in terms of
B. regardless of
C. with respect to
D. in accordance with
These areas rely on agriculture almost __________, having few mineral resources and a minimum of industrial development.
A. respectively
B. separately
C. extraordinarily
D. exclusively