我妈妈是英语老师，她也是一位很好的演讲者。

My mum is an English teacher, and she is also a good ___speaker.

让我们欢迎我们的特邀演讲者。

Let's welcome our guest ___speaker.

她以出色的公众演讲能力而闻名。

She is known as a good public ___speaker.