be polite to sb 对某人有礼貌 ; 对人礼貌 ; 对……有礼貌
be polite to customers 对待顾客要有礼貌
Be polite to teachers 对老师有礼貌
be polite to do 做……有礼貌
be polite to others 对他人有礼
be polite to people 对人有礼貌
Be polite to the elderly 对老人有礼貌
Be polite to other people 对别人有礼貌
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