Dear teachers, <br/><br/>If I want to use <u>so that</u> to express purpose, sould I say: <br/><br/>a) He refused to move so that the police had to carry him away. <br/><br/>b) He refused to move so that the police would have to carry him away. <br/><br/>c) both possible ? <br/><br/>Thank you for your help. <br/>Best regards, <br/>Hela