_Christmas Day on还是in

_Christmas Day on还是in i have math that day还是i have math on that day? I came the same day 还是i came on the same day 因为i came the same day as she left.不加on.那么I came the same day 还是i came on the same day 在santa brings gifts _christmas?中为什么用on不用at? Monday is my favorite day bacause I play volleyball （in,on）that day?in,还是on in the day还是on the day? in rainy day还是on rainy day on open day还是in open day? on christmas day?还是 in Christmas day? in every day还是on every day on winter day 还是 in winter day I work on the day on first day 对还是 on the first day 对 on Mid-autumn Day 还是on the Mid-autumn Day? I play tennis on i.every day? I shall never forget the day in which I joined the league是上句对还是I shall never forget the day on which I joined the league对? on school night还是nights on school day还是days I'm very upset on that day