填空题 It is impolite to 1 at somebody or follow him constantly.
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【正确答案】 1、stare    
【答案解析】解析： It is impolite(无礼) to stare(盯着) at somebody or follow(跟着) him constantly(不变地).这是不礼貌地盯着别人，或者不断地跟他走