试题详情 单词拼写-根据首字母填空 适中0.65 引用6 组卷669 It’s polite to k________ at the door before entering the office. 2023九年级·全国·专题练习 收藏试题 下载试题 加入试题篮 知识点：knock动词不定式作主语 答案解析 【答案】很抱歉，登录后才可免费查看答案和解析！ 立即登录 类题推荐 When I was chatting online last night, I heard someone ________ (knock) at the window of the bedroom. She kept ________ on the door, but nobody answered. (knock) It’s polite to k_____ at the door before entering teachers’ office. We should follow it. 组卷网是一个信息分享及获取的平台，不能确保所有知识产权权属清晰，如您发现相关试题侵犯您的合法权益，请联系组卷网 组卷 试题篮 我的 打开组卷App 获取专属积分，充值下载直接抵现
