We go to school foot and eat meals chopsticks.A by by B with by C on with

问题补充：

We go to school foot and eat meals chopsticks.

A by, by B with, by C on, with

答案：

解析：考查介词用法。短语：步行on foot，使用筷子with chopsticks，句意：我们步行去学校用筷子吃饭。所以选C。