You can buy the bread, the milk, the pulses, the soap, the refreshments... (it's the...)
You can buy the stamps, the postal... (it's the...)
You can buy the train tickets (it's the...)
You can buy the aspirin, the sunscreen, the diapers... (it's the...)
You can take the cafe, the juice... (it's the...)
You can buy the newspaper, the magazines, the books... (it's the...)