"A" and "The" or no article
Remember: We don't usually use "the" or "a" when we are making generalisations.
But, we do use "the" for talking about specific examples, when the listener knows exactly which one we are talking about. And we use "a" when we are talking about just one, and it doesn't matter which one.
There are 35 random questions here - choose the correct answer - a/an/the or nothing.
You might get the same question twice (or even 3 times!)