50.( )The fiver through our city.which is about .is clean again. A.6 000 meters long B.6 000-metres-long C.6 000-metre-long 【查看更多】

 

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The fiver through our city,which is about ____________ ,is clean again.

A.6 000 meters long         B.6 000-metres-long    C.6 000-metre-long

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