单项选择题

No one could come up with an easy solution to the government's predicament-labor ______ which is caused by the wars.

A．decline
B．vacancy
C．rarity
D．shortage
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单项选择题
The world-famous British Museum which houses a ______ collection of valuable books, paintings, works of arts, etc. attracts millions of visitors every year.
A．immersible
B．miscellaneous
C．overwhelming
D．unified
单项选择题
To the great disappointment of the public, the wanted in the murder case so far remains ______.
A．at large
B．in freedom
C．at ease
D．in prison
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