Could you please help me correct these sentences?<br/><br/>1 How can you base a movie on a video game?/How can a movie be based on a video game?<br/><br/>2 It takes the author 3 chapters to get to the 20 minutes point in the movie/to cover 20 minutes of the movie.<br/><br/>3 Which of these is correct please?<br/><br/>Why can't the train ever pull in as/while I get there.<br/><br/>Why can't the train ever pull in as/while I'm getting there.<br/><br/>Why can't I ever get there as/while the train pulls in.<br/><br/>Why can't I ever get there as/while the train is pulling in.<br/><br/> Do these 2 sentences mean the same thing?<br/><br/>Train A pulls in while train B is pulling in. = Train B has started pulling in when train A pulls in.<br/><br/>Train B pulls in while train A is pulling in. = Train A has started pulling in when train B pulls in.<br/><br/>4 Are these all correct?<br/><br/><i>I can last 2 months off/on/with this money. </i><br/><br/><i>I can hold out 2 months on/off this money. </i><br/><br/><i>I can live on this money 2 months.<br/>I can live off this money 2 months.</i><br/><br/><i>Thank you so much</i>