I'll go to the convention center <u>as soon as</u> I've checked into the hotel.<br/><u>Once</u> Nora has finished this work, get her started on the Finlay account.<br/><br/>My question here is whether I can replace the underlined words with "as". I know "as" can mean "when" in some cases. So they will become:<br/><br/>I'll go to the convention center <u>as </u>I've checked into the hotel.<br/><u>As</u> Nora has finished this work, get her started on the Finlay account.<br/><br/>Please advise. Thanks.