公民必须遵守法律以维持社会秩序。

Citizens must ___observe the law to maintain social order.

所有员工都必须遵守公司的安全规定。

All employees are required to ___observe the company's safety regulations.

在斋月期间，穆斯林从黎明到黄昏遵守斋戒。

During Ramadan, Muslims ___observe fasting from dawn to dusk.