【简答题】A.It was opened in the 20th century. B.It was built under the busy streets of London. C.A lot of workers worked for the Victoria Line. D.No one checks and collects the tickets on the platform.
【简答题】A. It was built by the Canadians. B. It was extremely difficult to clear. C. It was built to facilitate trade. D. It was begun a few years after Maine became a state.