夜幕降临时，捕食者逐渐逼近它们的猎物。

As night fell, the predators ___closed ___in on their prey.

城市扩张正逐渐逼近曾经是乡村的社区。

Urban sprawl is ___closing ___in on the once rural community.

安全部队逼近藏身处以抓捕恐怖分子。

The security forces ___close ___in on the hideout to capture the terrorists.