Road Closure Procedures in SydneyB. Road Conditions in Sydney C. Road Management in Sydney 参考答案:子问题 1: C; 子问题 2: B; 子问题 3: A; 子问题 A 题 18:We ___ the last bus and didn't have any money for taxi, so we had to walk home. 目 参考答案: A. B.mi...