Challenge your own sentences. Say something challenging.

1, stock is our hard-earned accumulation, but it is also dangerous, and it is easy for us to fall into the dilemma of innovators. Abandoning shares is anti-human. Only by relearning can we force ourselves to abandon shares and challenge ourselves.

2. Hard work is a kind of respect for opponents, and treat them with awe. Life is a marathon, and we should never give up, nor shrink back, surpass our opponents and challenge ourselves. There is no end to life, and your efforts should be worthy of your ambition.

3. Teenagers are fearless, explore the unknown, dare to challenge themselves, and meet new challenges with a new image of handsome, sunny and heroic.