As we know,Beethoven is the greatest musician ________.
#28674
A
for all the time
B
of all time
C
by all times
D
at all times
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His job at the hospital did not pay much, so he found another _____.
#28357
A
on the rise
B
on the spot
C
on the decline
D
on the side
Theory is based on practice and ________ serves practice. 
#27483
A
in turn
B
by and by
C
by chance
D
in this case