许多女性在夜晚的街道上感到不安全。

Many women feel ___unsafe on the streets at night.

就在那时，我开始感到不安全。

It was then that I began to feel ___unsafe.

想到人群可能变得无法控制，我感到不安全。

The idea of the mob becoming uncontrollable made me feel ___unsafe.