Boy: Please proceed to the next counter.<br/><br/>Girl: Sorry, what (is, was) that again?<br/><br/>1. Which linking verb is correct for the girl's response above?<br/><br/>2. When do we use the phrases "What <b>is</b> that again?" and "What <b>was</b> that again?"?<br/><br/>Please help. I would very much appreciate your assistance.