it is over duty to master it

it is over duty to master it it is our duty to do It is over to He felt it his duty to.为什么不是He felt it is his duty to . 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 one’s duty to do sth句式仿写快 It is our duty to keep the classroom c--------. He felt ______ to work for human rights and progress.A.it his duty B.his duty C.that is a duty D.that is his duty We thought it our duty to take care of the orphans. 为什么不用“We thought it is our duty”呢? your duty is to obey . It's on duty to keep our classroom clean 改为同义句_______ ________ our classroom clean is our duty. he felt ( ) to work for human rights and progress.选哪项A：it his duty B:his dutyC:that's a duty D:that is his duty 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. we think it our duty to help others为什么不加IS啊we think it is our duty to help others Farce over,it is time to face Farce over,it is time to face some things