How are you going to Tianjin?<br />I'm going there by train. It will take me about six hours to get there.<br />Why not go there by plane? It only takes two hours to fly there.<br />You know the ticket is very expensive.<br />Question<br />How long will it take the boy to go to Tianjin by plane?<br />I don't know.<br />How long will it take the boy to go to Tianjin by plane?<br />How long will it take the boy to go to Tianjin by plane?<br />We have three days off.<br />How long do you have to fly there by plane?<br />I'm going to Tianjin by train.
A . One hour.B . Two hours.C . Four hours.D . Six hours.
