Definition: on the occasion of Level: A2
你给他买了什么圣诞礼物？
What did you buy him ___for Christmas?
我们正在为吉姆的60岁生日举办一个派对。
We're having a party ___for Jim's 60th birthday.
我很累，因为我昨天为我的生日举办了一个派对。
I'm tired because I had a party yesterday ___for my birthday.
