It is impolite to come into the office without ( )the doorA.knock B.knocking at C.to knock at D.knocking to

It is impolite to spit everywhere 的同义句___ ___ everywhere is impolite. it is impolite to at others空在 impolite 后,s开头一个单词 It is impolite to（ ）others when they are talking. it is impolite to ask someone to do something without saying please 中文意思 it's impolite to keep s______when a student is asked to answer a question in class it is impolite to look at others for a long time.(用英文解释） it is impolite __ __ __others it's impolite to ________ at others is it impolite to eat soup noisily in most frican countries? because it is not impolite to do so in her country是什么意思 求英文翻译it is impolite to delete a person's leaved message! i think it is impolite to quarrel with her,填 isn't it 为啥顺便麻烦讲讲高中反义疑问句 To speake loudly in public is impolite.(同义句)__ is impolite __ __ __in public 英语否定转移我的书上有这样一句话.I think that it is not impolite to smoke during a meal in France.为什么不是I don't think that it is impolite to smoke during a meal in France. it's very impolite to ask _______ money someone gets from work and how old he or she is. It is impolite to eat so noisily in cuba (对in Cuba 划线提问） ---- is it ----- to eat so noisily? Lily,don't eat so n_____because it is impolite It's impolite to ask （person）question It's impolite to s＿ at others.