Riddle

12 Riddle “ I have a question for you, ” says Billy. “ It is yours, but everyone uses it more than you do. What is it?“ Sally thinks hard. It is mine, but others use it more than I do. What can it be? Now Sally smiles. She knows what it is. “ My name, of course, " she says. Lots of people use her name, but Sally almost never does.

Let's see if Tom can answer!