单项选择题

Could you possibly ______ me at the next committee meeting

A．stand in for
B．make up for
C．fall back on
D．keep in with
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单项选择题
Countries that traditionally never allowed foreign students to stay and work—like Germany or the United Kingdom—are facing their own labor ______ in information technology and relaxing their immigration laws.
A．cuts
B．shortage
C．weaknesses
D．imports
单项选择题
Bill looked everywhere for his dictionary but ______ had to return home without it.
A．in the end
B．at the end
C．in the finish
D．at the last
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