He thought it his duty to go through the papers

He thought it his duty to go through the papers 2.He felt it his duty to help others 2.They thought it no go He ___ thought it was his duty to tell me the fact. He thinks it his duty to help the sick. He thinks it his duty to help the poor里面为什么用it? he feels it his duty to help to help others He deemed it his duty to help others. We thought it our duty to take care of the orphans. 1：He felt ___to work for the world peace.A.it his duty B.his Suddenly the thought came to me( )he could go blind. 彭翔：he thought it expedient not to tell his wife where he had 改错：He thought about go to Greece.