Only one, but the light bulb really has to want to change.
None. They aren't about to change a bulb when flipping a switch has worked for 15 years.
One, but the light bulb has to want to change.
It depends on the definition of lightbulb.
None. The light bulb shall never burn out. (OK. It's more cathartic than funny...)
He had an apartment complex.
Because she thought everybody loved her.
