她的不安让她无法在会议上保持安静。

Her ___restlessness kept her from staying quiet during the meeting.

他最近总感到一种莫名的烦躁，却又说不出原因。

He's been experiencing a strange ___restlessness lately without knowing why.

孩子们午休时的坐立不安让老师很头疼。

The ___restlessness of the children during nap time gave the teacher a headache.