单项选择题


A．because
B．caused
C．due
D．owed
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单项选择题
A．advantageB．grantedC．it as advantageD．it for granted
A．advantage
B．granted
C．it as advantage
D．it for granted
单项选择题
A．aboutB．atC．ofD．nil
A．about
B．at
C．of
D．nil
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