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单项选择题
A．They are sisters.B．They are strangers.C．They are customer and shop assistant.
A．They are sisters.
B．They are strangers.
C．They are customer and shop assistant.
单项选择题
A．At the bus stop.B．At the first crossing.C．At the end of the road.
A．At the bus stop.
B．At the first crossing.
C．At the end of the road.
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