他在整理书架。

He is ___organizing the bookshelf.

我们正在组织一次校园清洁活动。

We are ___organizing a campus clean-up event.

她在电脑上整理照片，按日期和地点分类。

She is ___organizing the photos on her computer by date and location.

她在组织一场生日派对。

She is ___organizing a birthday party.