#1 It was very kind of you to do the washing-up, but you .................it.<br/><br/>A. didn't have to do (My answer)<br/><br/>B. hadn't to do<br/><br/>C. mustn't have done <br/><br/>Which one is correct? Can you explain me the difference b/w all three option?<br/><br/>#2 I had not to play this game OR I had to not play this game.<br/><br/>Are both version same and convey same meaning?