酒店距离车站步行约15分钟。
The hotel is about 15 minutes ___on ___foot from the station.
孩子们经常步行上学。
Children often go to school ___on ___foot.
我通常步行来。
Usually, I come ___on ___foot.
他们是乘公交车还是步行？
Are they going by bus or ___on ___foot?
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