她目睹了抢劫案的发生，随后向警方提供了详细描述。

She ___witnessed the robbery and later gave a detailed description to the police.

目击者向警方描述了事故发生时的情况。

The ___witness described the accident scene to the police.

请在结婚证书上签字作为见证人。

Please ___witness the marriage certificate by signing here.

这座小镇在过去几年见证了巨大的变化。

This small town has ___witnessed dramatic changes in recent years.