In some places the machines work 24 hours a day. [A] Right [B] Wrong [C] Doesn’t Say
Although there are many different sizes and kinds of vending machines, they all work in nearly the same way. People put money into the machine and then open a door to receive what they buy. Some machines will also return change to the people, and a few will even give change to paper notes. But the idea is the same. People like to save time and are usually willing to pay a higher price for this convenience.