Mr.Morse,who graduated from a famous medical university,spent years ______ his skills as a doctor.
#82500
A
adapting 
B
acquiring
C
occupying 
D
concentrating
推荐题目
I spent the whole day repairing the motorbike. The work was ____ simple.
#64121
A
anything but
B
nothing but
C
something of
D
all except
He used to ____his teaching when he was young.
#81703
A
devote to
B
be devoted to
C
devoting to
D
being devoted to
We should __________ primary importance to job training.
#69210
A
concentrate  
B
devote
C
attach
D
emphasize
This company is closing up, so lots of workers will be ______.
#72507
A
laid down
B
laid out
C
laid off
D
laid aside