We give gifts to our friends __ Christmas A on B at C to 选呢个?说说为什么
问题描述:
We give gifts to our friends __ Christmas A on B at C to 选呢个?说说为什么
答
at Christmas
on Christmas Day on要具体到某一天
只有这两个固定搭配.一看就知道了吧,选B