按规律填空 freshman,____,junior,senior

按规律填空 freshman,____,junior,senior Freshman Sophomore Junior Senior 大一 freshman 大二 sophomore 大三junior 大四senior junior和senior区别 senior school 和 junior school junior 和SENIOR的问题 junior和senior 区别：精确 freshman 有junior middle school ,senior middle school的吗? junior high school middle school high school senior school 的 middle school和junior /senior school 的区别 大学的JUNIOR和SENIOR怎么定义的