Sallyhasanewbikeandshelikessports.Sosheridesherbiketosc...
問題詳情：Sallyhasanewbikeandshelikessports.Sosheridesherbiketoschooleveryday.Ittakesherabout10minutes.Jim,Sally’sbrother,isshorterandthinnerthanher.Buthelikessports,too.Everydayhewalkstoschool,andhish...