They usually do some office work ____weekdays A .in B.on C at D.both BandD
问题描述：
They usually do some office work ____weekdays A .in B.on C at D.both BandD
答
用 on weekdays 常用语哦!记住!
weekdays 就是除了周末的那些日子,周一至周五,上班的上班,上学的上学.我不赞成用“工作日”涵盖所有,也有许多人是在家中闲散退休的at weekdays行不行不可以，at weekands！on weekdays 一般这样！