单项选择题


A．to know
B．knowing
C．know
D．having known
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单项选择题
A．bringingB．takingC．ensembleD．organizing
A．bringing
B．taking
C．ensemble
D．organizing
单项选择题
A．makesB．makeC．madeD．making
A．makes
B．make
C．made
D．making
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