We celebrate Christmas ____ December 25th.
ON
I went to a party ____ the holidays.
DURING
What did you do ____ spring?
IN
My birthday was ____ May 22nd.
ON
His birthday is ____ the winter holidays!
during
What did you do ____ New Year's Eve?
ON
My friend's birthday is ____ the winter.
IN
I saw many great movies ____ the summer holidays.
DURING