merry xmas还是happy xmas

merry xmas还是happy xmas merry xmas hi cute,Merry Xmas happy new merry xmas to Merry Xmas,and happy the only and new 2010 We wish you merry Xmas Merry Christmas 和 Merry Xmas (急) Merry Christmas 和 Merry Xmas （急) I wish u all a Merry Xmas! We Wish You A Merry Xmas 歌词 为什么现在写merry christmas都写成merry Xmas 为什么今天叫Merry Xmas而不叫Merry christmas呢?