go back-to-school这是什么用法?

go back-to-school这是什么用法? go back school还是go back to school? why does Billy went to go back to school中文意思是什么 we relaxed and prepared to go back to work or school 的意思是什么 1go back to,go back on 咋用?2go back还有什么用法 Li Ping wants to( )A:go to the B:go back to school C:go back go to school .go to hospital.go to bed.go to work.（这都是固定用法吗? get back to the school,go back to the school,comeback to the go back to school 到底要不要to back-to-school specials的意思是什么 go back to school for study的中文意思 Tom wants (go back to) school.对括号部分提问