他带我参观了这座城市，我认为这是非常慷慨的举动。

He showed me around the city, ___which I thought was a generous gesture.

这部电影的结局出人意料，我认为这使它令人难忘。

The film had a surprising ending, ___which I believe made it truly memorable.

她跑完了马拉松，我觉得这非常鼓舞人心。

She finished the marathon, ___which I found incredibly inspiring.