他在演讲中恰如其分地引用了一句古语，赢得了观众的掌声。

He ___felicitously quoted an ancient saying in his speech, earning applause from the audience.

她优雅地举起酒杯，向宾客致意。

She raised her glass ___felicitously to toast the guests.

她巧妙地选择了用词，让演讲既动人又有说服力。

She ___felicitously chose her words to make the speech both moving and persuasive.