The professor delivered an extempore lecture when the guest speaker canceled.

He answered the question extempore, relying only on his instincts.

At the town hall, his extempore surprised everyone and sparked a lively debate.

Her extempores at the open-mic night impressed the audience with their wit and spontaneity.

Her extemporizations during the rehearsal revealed both her creativity and her lack of preparation.

Her extemporal remarks won over the skeptical audience, proving that she could think on her feet.

The extemporizers at the conference captivated the audience with spontaneous speeches.

At the open mic, the seasoned extemporizer captivated the crowd with a hilarious and heartfelt monologue.

She spoke extemporally about the complex topic, yet her points were clear and persuasive.

She extemporized a heartfelt speech when the scheduled speaker canceled.