It is polite to smile to others .(变成同义句） —— smile to others

It is polite to smile to others .(变成同义句） —— smile to others life is good,kind to others,smile to It is not polite to laugh（） others It is not polite to stare at others. It is not polite to s_ at others. It is not polite to interrupt others when It's_(polite)to shout at others. As we all know ,it is not polite to keep others （）for a long who tries to make others smile most of the time? important,others,is,to,it,help（连词组句） Smile is the best but least expensive gift to others谁知道什么意思 be polite to others还是be polite with others