The school is only 20 minutes' walk from my home.
望采纳~
我觉得应该这样说比较地道通俗;
It takes me 20 minutes to walk from home to the school.
It only takes me 20 minutes'walk from home to school .
just 20 minutes from my home to school
这样说鬼佬都懂，但是如果是写作文，或者中国的一些试卷的话···应该··有点悬，school前面至少加个 the
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