她步行去上学。
她甚至每天步行三英里去上学，因为她没有钱。
She even walked three miles to school each day because she didn't have any money.
她每天早上步行去上学。
她每天步行去上学要花二十分钟的时间。
有时她骑自行车去上学，有时步行去上学。
Sometimes she goes to school by bike, and sometimes she goes on foot.
有时她骑自行车去上学，有时步行去上学。
Sometimes she goes to school by bike, and sometimes she goes on foot.
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