单项选择题

A．There was no garbage left to clean up.
B．There was more garbage than before and they had to work harder.
C．The fiver had become so clean that a lot of water-birds came back.
D．The river was much cleaner and they had to search for garbage.
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单项选择题
A．It is in the heart of the city at 42nd Street and Fifth Avenue.B．It is in the heart of the city at 42nd Street and Sixth Avenue.C．It is in the heart of the city at 5nd Street and 42nd Avenue.D．It is in the heart of the city at 6nd Street and 42nd Avenue.
A．It is in the heart of the city at 42nd Street and Fifth Avenue.
B．It is in the heart of the city at 42nd Street and Sixth Avenue.
C．It is in the heart of the city at 5nd Street and 42nd Avenue.
D．It is in the heart of the city at 6nd Street and 42nd Avenue.
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