it's impolite to keep s______when a student is asked to answer a _英语解答

it's impolite to keep s______when a student is asked to answer a question in class

人气：215 ℃　时间：2019-08-22 10:23:18

解答

silent翻译一下呗当一个学生在课堂中被提问时，默不做声是不礼貌的。