单项选择题

A．Pollution in the air.
B．A lack of parking.
C．Accidents with bicycles.
D．A lack of bridges.
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单项选择题
A．The weekend dancing.B．The weekend shopping.C．The weekend party.D．The weekend arrangement.
A．The weekend dancing.
B．The weekend shopping.
C．The weekend party.
D．The weekend arrangement.
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