她自从找到工作后，似乎对自己更有信心了。

She seems a bit more ___sure ___of ___herself since she got a job.

他是一个高大、黝黑的男人，走路带着自信，并且由于在商业世界的成功而对自己很有信心。

He is a tall, dark man who walks with confidence and is ___sure ___of ___himself because of his success in the world of business.

要成功，你必须对自己和自己的能力有信心。

To succeed, you must ___be ___sure ___of ___yourself and your abilities.