She was on antibiotics for an eye infection that wouldn't go away.
Many of the elderly are on medication.
[33] If you live on a particular kind of food, you eat it.
If a machine runs on a particular kind of power or fuel, it uses it in order to function.
The caterpillars feed on a wide range of trees, shrubs and plants.
He lived on a diet of water and tinned fish.
The system could be used to ensure that cars are converted to run on unleaded petrol.
...making and selling vehicles that runs on batteries or fuel cells.
