rewrite the sentence without changing the meaning

It isn't commonly used today, at least not in the US, but here it is: Be careful, lest you fall.

Let me introduce you to Mr Thomas. His son got the best marks at school last year.

Business leaders make ethically significant decisions every single day, and they always do so according to some theory of ethical behavior whether they think of it that way or not. A basic understanding of the most important ethical theories can help a business owner think clearly about ethical problems and make well-informed decisions.

Changes in way of life and socio economic status and lack of education have led to more sedentary life style in Pakistan and physical activities have decreased stridently. Half or over all our sample took no physical activity and women spent significantly less time in physical activity than men. Many of the older people in our study lack knowledge about the importance of nutritional foods. And

Sally told Jon Bet snowball can beat you.