演出晚上7点开始，9点结束，中间有一次短暂休息。

The show starts at 7 pm and ends at 9 pm, with a short break ___in ___between.

长时间的学习需要在中间休息以保持注意力。

Long study sessions require breaks ___in ___between to maintain focus.

两次世界大战之间的历史时期以重大的社会变革为标志。

The historical period ___in ___between the two world wars was marked by significant social change.