we are going to clean the classroom ( )friday afternoon

问题描述:

we are going to clean the classroom ( )friday afternoon

on
on可以加具体的某一天
希望我的回答可以帮助你!

on
某一天(包括某天上午,下午,晚上)前用 on. 再如:
on the morning of New Year's Day

on
在星期几前面的介词用on

on
完善下回答吧,知友们期待您耐心详细的解答

填on.在具体某一天上午或下午用on