雅思大作文,几句话帮忙看看有没有语法问题,谢谢!（懂得进）

Nowadays,an debatable issue people are facing is whether the university should provide the workplace knowledge or not.如今,人们正面临的一个值得商榷的问题是大学是否应该提供工作场所知识.
Bill Gates is the world's richest person,who decided to drop classes and started his bussiness at the age of 22.