I often go ?.?处是填by foot,by walk,on feet还是on foot?

I often go ?.?处是填by foot,by walk,on feet还是on foot? walk on feet 还是 walk on foot I often go to school on foot,but （） by bus. I often go to school on feet(foot)我搞不懂.怎么会用feet 上网查 都是foot 是 Should I go there on foot or by bus? go...on foot=walk to.go...by car=drive to.那么go...by ship/sea 根据句意及首字母提示补全单词 1.I often go to school on foot i____of by bus I go to school on foot instead of by bus.of和by可以连用? go to shool on foot 为什么是foot而不是feet? I often go there on foot on Sunday?同义句 Usually I go to school on foot.Sometimes I go by bike. 请问go on foot on foot walk有区别吗?