她不常抱怨，但事实是她不堪重负。

She doesn't often complain, but ___the ___fact ___is she's overwhelmed.

他可能觉得吃昆虫很奇怪，但事实是这在一些文化中很常见。

He might think it's strange to eat insects, but ___the ___fact ___is it's a common practice in some cultures.

尽管有谣言，但事实是这个项目正在按计划进行。

Despite the rumors, ___the ___fact ___of ___the ___matter ___is the project is on track.