单项选择题

No one could come Up with an easy solution to Japan's labor ______.

A．decline
B．vacancy
C．rarity
D．shortage
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单项选择题
He tried to ______ up his lessons by telling a few jokes.
A．raise
B．stimulate
C．inspire
D．liven
单项选择题
According to the weather forecast, which is usually ______ , it will snow this afternoon.
A．accurate
B．precise
C．exact
D．perfect
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