当她谈论过去时，眼中流露出深深的悲伤。

There was a deep ___sadness in her eyes when she talked about the past.

朋友搬走后，孤独和悲伤的情绪淹没了他。

Feelings of loneliness and ___sadness overwhelmed him after his friend moved away.

在那部精彩的电影结束时，一阵悲伤向我袭来。

A wave of ___sadness hit me at the end of that beautiful film.