Did you design your book cover by yourself?

你這本書的封面是自己設計的嗎？

The boss showed an interest in Jack's plan.

老闆對 Jack 的提案有興趣。

Marco has a strong desire to see the world.

Marco 非常渴望出去看看世界。

If you want to succeed, you have to work hard.

如果你想要成功，就必須努力。