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单项选择题


A．if
B．when
C．because
D．since
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热门试题

单项选择题A．audiencesB．spectatorsC．coachesD．players

A．audiences
B．spectators
C．coaches
D．players

单项选择题A．operatingB．runningC．goingD．occurring

A．operating
B．running
C．going
D．occurring