【Howtokeephealthy?Oneimportantthingistoexerciseoften.TheSmithfamiliestrytoexerciseeveryday.QiangSmithcannotexerciseinthemorningbecausehemustbeathisjobatseveno'clock.Butherunseveryevening.Hewalksalot,too.Hewalks】

　　Howtokeephealthy?Oneimportantthingistoexerciseoften.TheSmithfamiliestrytoexerciseeveryday.QiangSmithcannotexerciseinthemorningbecausehemustbeathisjobatseveno'clock.Butherunseveryevening.Hewalksalot,too.Hewalkstoschooleverydayandafterschoolheplaysbasketballwithhisfriends.Qianggoestoayogaclassthreetimesaweek,butitisn'talwaysinthishardway.LastyearMr.AndMrs.Smithdroveeverywhere.Theythoughttheyshouldusethecarallthetime.NowtheSmithswalkmore,andtheyallfeelbetternow.Andtheythinktheymustn'tbetoohard.Theydon'thavetoexerciseeveryday,buttheysgouldtrytokeepingoodhealth.