it is polite to accept or refuse an invitation the first time it is ofered啥意思?

it is polite to do It is polite ___( speak) to the old ______( polite). Is it polite to eat noisily? it is polite to follow them It is not polite to stare at others. It is polite for/of you to do,哪个对? It is polite to smile to others .(变成同义句） —— smile to others ------ polite . 英语的改错题：It is not polite to shout to other people.改错：It is not polite to shout to other peopleperson 的复数就是people吧。 It is polite to say＿(再见) to your friends when ...It is polite to say＿(再见) to your friends when you leave their home. It is more polite to write to friends than to call them 的意思 It is _____to say to your mother like this Do it _____(polite) Is it polite for us to ask about a girl is age? 英语翻译It is then polite to invite the friends to your home. It is [polite]for him to speak to the old than before It is not polite to keep silent when others want to have a ( ) voith you.单 it is a good behavior to speak to the old_____(polite) It is not polite to interrupt others whenIt is not polite to interrupt others when they are talking without sayingExcuse me .求翻译 It is polite of us to（ ） the food on your plate