演讲者正在向观众讲话。

The speaker is ___addressing the audience.

他仔细地花时间在包裹上填写收件人的详细信息。

He carefully spent time ___addressing the package with the recipient's details.

学校正在采取措施解决学生心理健康问题。

The school is ___addressing students' mental health issues with new measures.

在正式场合，我们应该用'先生'或'女士'来称呼他人。

In formal settings, we should use 'Mr.' or 'Ms.' when ___addressing someone.