我紧张地等待面试结果时，一直在客厅里踱来踱去。

While anxiously awaiting the interview results, I kept ___paceing ___up ___and ___down the living room.

她在医院的走廊里踱来踱去，担心着手术结果。

She ___paced ___up ___and ___down the hospital corridor, worrying about the outcome of the surgery.

演说开始前，他在后台踱来踱去，反复练习开场白。

Before his big speech, he was ___pacing ___about backstage, rehearsing his opening lines over and over.