As I walked________the countryyards, I noticed how the peasants devoted hours to cleaning it
A. across B. down C.through D. along
As I walked________the countryyards, I noticed how the peasants devoted hours to cleaning it
A. across B. down C.through D. along
【解析】C 考查介词和动词的搭配。through从空间里穿过;across从物体的表面过去。