We’ve a lot of things to do. But _____ we must get some sleep.
#81586
A
at first
B
at once
C
first of all
D
the first thing
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Young Lee learned some English when she stayed in America, and last year she ____ herself Japanese.
#81596
A
kept on teaching
B
went on teaching
C
kept on to teach
D
went on to teach
We should __________ primary importance to job training.
#69210
A
concentrate  
B
devote
C
attach
D
emphasize