⏪ 新概念英语 - [2-064] - (97版) ⏩ ⏳ 正在检测本地文件... First listen and then answer the question.先听录音，然后回答问题。Why was the first tunnel not completed? 为什么第一条隧道没有建成？The Channel Tunnel 📁 请先导入本地文件， 需要帮助？点击我 ↗