Flight attendants usually need to arrive at the airport ______ before their flight leaves.
#24681
A
much
B
very
C
well
D
largely
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There are a small number of people involved,possibly ________ twenty.
#22220
A
as few as
B
as little as
C
as many as
D
as much as
Bicycling is good exercise; ____, it does not pollute the air. 
#23303
A
nevertheless
B
besides
C
otherwise
D
therefore
Circus tigers, although they have been tamed, can _____ attack their trainer.
#25052
A
unexpectedly
B
deliberately
C
reluctantly
D
subsequently