on weekdays,at weekdays和on weekday,分别是什么意思?它们的区别分别是什么on weekdays，at weekends和on weekday分别是什么意思？它们的区别分别是什么，上面的错了

on weekdays还是at weekdays at weekdays和on weekdays有什么区别?该怎样用? They eat lunch at school on weekdays,改一般疑问句 weekdays前的介词应该是什么?(on.in.at?) weekdays 前面用 on 还是用 in 还是用 at I get up at 6:30 on weekdays什么意思 英语老师来啊on weekends on the weekend at weekends at the weekend in weekends in the weekendin weekdays in the weekday in weekday on weekdays on the weekday on weekday at weekendsat weekday at weekdays on weekdays,at weekdays和on weekday,分别是什么意思?它们的区别分别是什么on weekdays，at weekends和on weekday分别是什么意思？它们的区别分别是什么，上面的错了 They eat lunch at school on weekdays.就at school提问 改错Sandy doesn't be at home on Weekdays.She is at school. It closes at 10:00 p.m.during weekdays and at midnight on Saturday and Sunday. 在周末英语怎么说是on weekends还是at weekends.在工作日是on weekdays吗? The bank closes 《at 7：30》 on weekdays 用whenThe bank closes 《at 7：30》 on weekdays 用when提问 急 have a birthday dinner_____A in next weekB on next weekC next weekD at next weekLily is very health she eats very___A good。B much。C many。D well Mike goes to bed at 21:00 on weekdays.对21:00提问,该怎样写啊?＿＿＿＿Mike＿＿bed on weekdays? They have lunch at school on weekdays?改为同义句紧急第三个单词是they They have classes ____ school on weekdays.A.after B.for C.at D.before weekdays的前面究竟是用介词on还是at,急!