阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

    That Beijing, together with Zhangjiakou, succeeded in getting the chance to host the 2022 Winter Olympic Games, speeds up the development of Zhangjiakou City. Word came ____the Beijing-Zhangjiakou high-speed railway, ____(locate) in North China, is currently under construction, and ____(expect) to be completed by 2020 in preparation for the cities to host the 2022 Winter Olympics. Starting from Beijing North Railway Station, heading west through the Great Wall three times in the capital's territory, the project is a big challenge, ____ designers say the explosions needed to dig the tunnels will not have an impact on the structure. The line has a ____(long) of 174 km as a double tracked passenger dedicated line, with ten stations situated along its route. Having a ____(totally) investment of 31.17 billion yuan ($5 billion), the trip between the two cities will only take 40 minutes, with the train ____(travel) at an average of 250 km/h. According to the plan, the high-speed railway will build two branch lines—one is to Yanqing Station and the other ____ Taizicheng of Chongli, ____ the Olympic village lies. The full railway, which includes 70-kilometer section through Beijing, will be completed in four and ____ half years.