单项选择题

It seems that he never knows how to speak in a ______ way.

A．respectful
B．respectable
C．respective
D．respected
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单项选择题
Sometimes the 3-year-old child has trouble ______ fact from fiction.
A．separating
B．to separate
C．having separated
D．for separating
单项选择题
All the parts of this washing machine are ______, so that it is very convenient to replace any of them.
A．normalized
B．mechanized
C．modernized
D．standardized
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