MrSmithshastwosonsOn的精选

问题详情：阅读表达；阅读下面的短文并用英语回答问题。      MrSmithshastwosons.Oneissevenyearsold,andtheotherisfive.Onemorningduringtheholiday,whenMrSmithiscleaningthecar,hisyoungersoncomesandaskshimf...