The river through our city, which is about , is clean again.
A. 6,000 meters long B. 6,000-meters-long
C. 6,000-meter-long D. 6,000- meter long
The river through our city, which is about , is clean again.
A. 6,000 meters long B. 6,000-meters-long
C. 6,000-meter-long D. 6,000- meter long
A