__61_theimprovementoflifestandards，thereareagrowingnumb...
問題詳情：__61_theimprovementoflifestandards，thereareagrowingnumberofpeopletravellingeachyear,___62__isagoodwaytoenjoylife.Somepeoplewouldlike___63___(take)apackagetour,whileotherswouldrather___64___(tra...