学校需要认真处理欺凌问题。

Schools need to address the ___issue of bullying seriously.

作为一名学生，这对你来说应该是一个非常重要的问题。

As a student, this should be a very important ___issue for you.

气候变化是一个重大的全球性问题。

Climate change is a major global ___issue.