1.   As soon as the sun went down, the temperature plummeted.

2.   It is a good place to sit and watch the sun go down.

3.   On the last evening of my visit to you I was standing half-hidden in the bushes, watching the sun go down.

4.   The sun had just gone down, and our apartment was cast in a pale-pastel light.

5.   The sun was going down and it was in a warm twilight that they reached the summit of their climb.

6.   The sun went all the way down and I was standing in the purple darkness.

7.   The sun went behind a cloud.

8.   We sat on the balcony and watched the sun go down.

9.   We watched the sun go down from the beach bar.