It is our duty to keep our school clean keep 后不是接动名词吗为什么是cle

It is our duty to keep our school clean keep 后不是接动名词吗为什么是cle It is our duty to keep our schoolyard clean and tidy.这句话是主语从 It is our duty to keep our classroom clean and tidy.中的It《our It is our duty to keep our classroom clean and tidy.中 our du It is our duty to keep our classroom clean and tidy.句中的 clea It is our duty to keep our e___ clean and tidy It is our duty to keep our classroom clean and tidy.这句话谁做主语谁 It is our duty to keep our city clean.中文该怎么翻译?它的同义句是什么? I think it's our duty to keep our environment clean and tidy 1、To keep our environment clean and tidy is our duty.(改为同意句） 英语句型转换1、To keep our environment clean and tidy is our duty.( Don't t_____ here and there.It's our duty to keep our school