Is it appropraite to use ONCE in this way?<br/><br/>--&gt;<i> I will get back to you <b><u>once</u></b> I get that ready.</i><br/><br/>If it is, does the "<i>once</i>" here means "as soon as"? and is it appropraite to be used in a formal letter?<br/><br/>Thanks!<br/><br/>Mei