The fastest way to trabel in a city is by underguound .In ma

The fastest way to trabel in a city is by underguound .In many big cities,there____usually more
than one ynder ground line.how to travel by under gro und?here is ___in for mation to know___you travel by under ground.First ,you should choose the right line.If you don't you will have to____it and take another one .Second ,you necd some coin ____your ticket.In most of the machines which sell tickets.only coins____.不打了.就这些 求翻译

最快的在城市中旅行的方法就是从地下走.在许多大的城市经常有超过一条?（单词没写明白）的地铁线.那怎么坐地铁呢?下面是一些如果坐地铁的信息.第一,你应该要选对正确的路线.如果你选错了,那你不得不下车然后坐上另一辆.第二,你需要硬币来买车票.在大多数的售票机中,只有硬币才可以使用.

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