we think it's impolite to go into room without knccking at t

we think it's impolite to go into room without knccking at t 改错:We think it's impolite to go into his room without knocki it's impolite to laugh at ( ) disabled it's impolite to ________ at others It's impolite to s＿ at others. It is impolite to come into the office without ( )the door It's impolite to look at other people.改错 I don't think we can do it without mom's help这句话正确吗? i think it is impolite to quarrel with her,填 isn't it 为啥 问一句英语语法问题It is impolite to break into other people's house w it is impolite to at others 翻译成中文：i think it would be better to go into the detail now.t