It is polite for/of you to do,哪个对?

It is polite for/of you to do,哪个对? it is happy _______ us to help people in need.----Yes.And it is polite _____ us to do so.it is happy _______ us to help people in need.----Yes.And it is polite _____ us to do so.A.for ,for B.for ,of C.of ,for D.of ,of soon的同义词,两个空,It is polite ()him ()so,A for to do B of doing C of to do D for doing选C是吧 it is not polite （） you to eat from other's plates?of or for?polite修饰You就是of，而修饰eat from...就应该用for 不是都对吗 it is polite （）child to give up his ...a .of b .for 答案是for 我一开始也觉得for 读起来较...it is polite （）child to give up his ...a .of b .for 答案是for 我一开始也觉得for 读起来较通顺,但是语法不是说of 用 it is polite to do Is it polite for us to ask about a girl is age? It is polite ___( speak) to the old ______( polite). It is [polite]for him to speak to the old than before it's polite ( ) him ( ) soA.for; to do B.of ;doing C.of; to do D.for ;doing It is polite of us to（ ） the food on your plate It is polite of us to give our seats to_____(患病的)people on the bus to,is,not,cut,polite,short,of,you,the,it,speaker连词成句,谢谢叻~ 用it is polite that.造句 It is polite ( ) in public places It is not polite. laugh at people Is it polite to eat noisily? it is polite to follow them