how about:<br/><br/><b>I have to do this, don't I?</b><br/><br/>or<br/><br/><font color="#008000">I have to do this, haven't I?</font><br/><br/>and<br/><br/>I must do this, musn't I?<br/><br/>or<br/><br/><font color="#ffa500"><b>I must do this,do I?</b></font>