单项选择题

A headache for the government is how to solve the problem of nationwide labour ______.

A．sufficiency
B．abundance
C．extra
D．surplus
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单项选择题
What ______ do we need for this kind of cake besides sugar and flour
A．elements
B．contents
C．ingredients
D．components
单项选择题
She can speak German and Greek ,to ______ nothing of English.
A．say
B．speak
C．tell
D．mention
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