单项选择题

The thief tried to open the locked door but______.

A．in no way
B．in vain
C．without effect
D．at a loss
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单项选择题
Those nations that interfere in the internal affairs of another nation should be ______condemned.
A．commonly
B．actually
C．uniquely
D．universally
单项选择题
My boss has always attended to the ______ of important business himself.
A．transaction
B．solution
C．translation
D．stimulation
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