As we all know, it’s not polite to keep others _________ for

As we all know ,it is not polite to keep others （）for a long As we all know ,it’s not polite to keep others_for a long ti as we all konw,it's not polite to keep others_____ for along As well all know,it's not polite to keep others_______(wait) laugh at等于It's not polite to laugh at others.It's not polite It is not polite to keep silent when others want to have a ( it is not polite to ask others personal questions such as th it's not polite to laugh at others这里的to laugh是什么成分 As we all know,it is ( 5 )for animals to be good at getting it's not polite ()others.to shout at 还是shout at it's not polite to trouble others when they are working 英语翻译让我自问自答：It's not polite to play tricks on others