1. I___________ by his wonderful performance, the audience were on their feet, applauding wildly.（用适当词的填空）
【答案】Impressed##mpressed
【解析】
【详解】考查过去分词。句意：被他的精彩演出所震撼，观众们都站了起来，热烈鼓掌。空处作句子的状语，根据“the audience were on their feet, applauding wildly”可以推测，他的表演使观众印象深刻，逻辑主语the audience“观众”与impress“使……印象深刻”构成被动关系，用过去分词impressed 。故填：Impressed。
