every day 的同义词组是什么?

题目

every day 的同义词组是什么?
要3个空的
We have a class meeting every day.
We have a class meeting _____ _____ _____.

答案

every day? 每天都要开班会,那么悲剧?
想了好久,也许问鬼佬都不一定回答的出来.汗!应该填day and night吧!