keep calm 保持镇静(别慌)keep quiet 保持安静(别吵)keep silent 保持沉默(别说话)come into being 形成局面;产生do/try ones best 尽最大的努力in danger 处境危险out of date 过时be deaf to sth 对充耳不闻the other day 在不久前,前几天deal with 对付,应付in debt 负债out of debt 还清债务do good deeds 做好事free of charge 免费do the deed 付诸行动,生效by chance 偶然without delay 毫不耽搁,立刻delay doing sth 迟迟未做某事deliver a