单项选择题

A．to
B．at
C．on
D．about
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单项选择题
A．FrequentlyB．IncidentallyC．DeliberatelyD．Eventually
A．Frequently
B．Incidentally
C．Deliberately
D．Eventually
单项选择题
A．adoptingB．conductingC．receivingD．adjusting
A．adopting
B．conducting
C．receiving
D．adjusting
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