欢迎回到学校 Welcome back to school ; Welcome come back to school

欢迎回到学校来 Welcome back to school

欢迎回到学校/班级 welcome back to school/class

欢迎返回学校 Welcome to return the school ; Welcome back to school

欢迎回来为学校 Welcome back for school

欢迎回来去学校 Welcome back go school

欢迎回家/学校 welcome back home

欢迎你再回到学校 Welcomed you back in school