在旅行前，我们从各个商店收集了必需品。

Before the trip, we ___gathered essential supplies from various stores.

为他的论文，他从众多在线来源收集了数据。

For his thesis, he ___gathered data from numerous online sources.

侦探从不同的犯罪现场收集证据以解决案件。

The detective ___gathered evidence from different crime scenes to solve the case.