All of the above logically could be applied in this context; however, if you are to choose one, I would think your best bet is "Vary Tone and Emphasis."
Explanation:
There's a lot that goes into making a speech more enthralling for the audience, especially depending on what kind of presentation you're giving. Generally speaking, I believe the tone and emphasis are most important for all speeches, so that probably sounds like your best bet.
1.早上好 Good morning 2. 你吃饭了吗 have u eaten yet? 3. 你是哪国人 which country are u from 4.真的 for real 5. 五十五 55 6. 这个苹果太贵了 this apple is too expensive 7.朋友们 friends 8.不要生气 dont be mad 9. 公主抱不动她的猴子了 The princess is unable to hold her monkey 10.冷 cold
