The fifth and final thing to do is to prepare and practice your impromptu speech. Even though you don't have much time, you can still use some strategies to organize and deliver your speech effectively. You should use a simple and clear structure, such as introduction, body, and conclusion. Have a main point or message that you want to convey, and support it with two or three sub-points or examples. Additionally, use a conversational and natural style for your speech, adapting it to your audience and occasion. Use appropriate and expressive language, tone, and voice. Moreover, use confident and positive body language, eye contact, and gestures to enhance your speech. Speak clearly, loudly, and slowly with pauses and emphasis to vary your pace and tone. Finally, practice your speech aloud with a mirror, friend, or recorder. Get feedback and make adjustments if needed. By following these tips you can choose a topic for an impromptu speech that suits your audience, occasion, and personal style. Remember an impromptu speech is not about perfection but improvisation and communication. So have fun and enjoy the challenge!