Keeping everyone involved has always been Robert's responsibility which is now Dennis's;
OPTIONS:
- Robert has passed the torch.
- Dennis has passed the torch.
Robert has passed the torch.

Ben enjoyed using the hookah more than smoking a cigarette because the
OPTIONS:
- cigarette smelled better.
- hookah smelled better.
hookah smelled better.

The water still looks pale after adding some drops of coloring. The
OPTIONS:
- coloring is weak.
- water is weak.
coloring is weak.