We must clean our classroom every day.怎样改为被动语态

We clean our classroom every day(改为被动语态) We clean our classroom every day(变为被动语态） We clean the classroom every day.改为被动语态 初中英语变为被动语态we must keep our classroom clean we must keep our classroom clean改被动语态 句型转换：1、We clean our classroom twice a day .(改为被动语态） 改被动语态改为被动语态①.We don't clean the classroom every day ②Do many we should clean our rooms every day(改为被动语态)our rooms_ _ _eve we must clean our classroom every day .（改为一般疑问） we have rule We must clean our teeth twice a day.改为被动语态 We must keep our classroom (clean) every day Students must be clean their classroom every day 如何变为被动语态