13) I … my degree last year and then … around Canada for six weeks (finished/ travel) ?

What was built the underground in london? ( when was built the underground in london? ) what did fuel work first train? (on which fuel did the first train work? ) how did many passengers transport underground on the first day of their work? ( how many passengers underground carried on the first day of its work? ) who did created the method through which you can deeply lay underground? ( who created the method through which you can deeply lay underground? ) what is the escalator in london was built by one of the first? ( which escalator in london was built as one of the first? ) do you often spend time in the london underground crime? ( how often criemes are committed in the london underground? ) there many police in the london underground? (are there many policy in the london underground? ) because of what the london underground can occur accidents? (what are the reasons why accidents can possibly occur in the london underground? ) does the speed of the escalators? ( does the speed of the escalators change? ) cleaner air in the metro or on the street? (where the air is cleaner: in the metro or on the street? )