It is our duty out environment?问好填什么

It is our duty out environment?问好填什么 it is our duty to do 根据首字母完成填空; it is our duty to reduce the pollution in order to protect the e[ ] it is our duty to distribute to the society翻译 it is our duty to protect the environment. It is our duty to protect the environment It is our duty to ＿（study） hard. It is our duty to keep the classroom c--------. It's on duty to keep our classroom clean 改为同义句_______ ________ our classroom clean is our duty. We thought it our duty to take care of the orphans. 为什么不用“We thought it is our duty”呢? It.is.our.duty.to.try.our.best.to.dealIt.is.our.duty.to.try.our.best.to.deal.with.the.challenges.with.the.help.of.our.teachers. It is our duty to try our best during the time It is our duty to keep our e___ clean and tidy It is our duty to keep our classroom clean and tidy.中的It《our duty 》和 clean and tidy是什么成分 we think it our duty to help others为什么不加IS啊we think it is our duty to help others 翻译：It is our duty to try our best to deal with each challenge .It is our duty to try our best to deal with each challenge in our education with the help of our teacher. working hard is our duty .是duty 还是duties呢 school ,it,work,tu,duty,is,hard,our,at,连词成句