TheMississippi,whichissometimescalled________,hasplayedavitalroleinthehistoryoftheUnitedStates.
Youshouldhelpthem________whenyourfriendsquarrelwitheachother.
英语翻译：instrumentofratification
Agriclturalchangesinthelate18thandearly19thcenturiesinEnglandweresogreatthattheywereworthyoftheterm“________”.
翻译：IbelieveChineseeconomicauthoritiesrecognizetheproblemandthenextFive-YearPlanwilladdressiteffectively.
