Group 61. 你应该亲自签收包裹。You are _ to sign for your package in _2. 因为下雨，我们决定将比赛推迟到下周。Because of the rain, we decided to _ _ the match until next week.3. 对孩子们要经常进行道路安全教育以避免交通事故的发生。Young children are often taught road _ to _ traffic accidents.4. 在过去的几年里，西宁发生了巨大的变化。Great changes have _ _ in Xining in the past several years.1.supposed; person【解析】“be supposed to do sth.”是“应该，理应做某事”之意，“in person”是“亲自”之意。2.put off 3. safety; avoi
