问题
单项选择题
Keys should never be hidden around the house since thieves _______ know where to find them.
A．virtually
B．unavoidably
C．reliably
D．invariably
答案
参考答案：D
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Keys should never be hidden around the house since thieves _______ know where to find them.
A．virtually
B．unavoidably
C．reliably
D．invariably
参考答案：D