Monday是啥?

Monday是啥? 是in Monday,还是on Monday 还是 at Monday 是on the monday,还是on monday? monday是星期一吧? 我想问下是on monday 还是in monday,是in monday afternoon 还是on monday afternoon Monday 劳力士上的MONDAY是 blue monday 是在哪一天 “在星期一”,是on the Monday’还是on Monday 是in the Monday morning 还是in Monday morning Is it Monday moring.是句号 it Is Monday moring 是in monday morning 还是 on monday morning Monday 的缩写 是Mon.还是Mon wednesday、satyrday、monday、thursday的左邻右舍是? It's Monday today.(对划线部分提问）划线部分是Monday I have an art lesson on Monday.对划线部分提问(划线部分是Monday) Today is Monday.Tomorrow is_.(Tuesday.WednesdaToday is Monday.Tomorrow is_.(Tuesday.Wednesday)是哪个? 上周一用英语怎么说 是last monday 还是 monday last week