单项选择题

The old couple tried to accuse their children of neglecting their ______ duties.

A．docile
B．tame
C．obedient
D．filial
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单项选择题
It was the very ______ invention, and had just arrived from the United States.
A．late
B．latest
C．last
D．lasting
单项选择题
The man who ______ taxes in the area was charged with bribery by the police.
A．received
B．collected
C．gathered
D．accumulated
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