问题补充:
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
答案:
(答案→)A. it his duty
B. his duty
C. that is a duty
D. that is his duty
解析:feel/ find/ think / consider/ make/ regard…+ it +名词/ 形容词 +不定式短语,其中it做形式宾语,真正的宾语是“to work for human rights and progress”