Idioms are phrases that don't have a literal meaning. This means that we can't conclude what a phrase means based on the meanings of words that make it up. We simply have to learn what these phrases mean.
An example of an idiom is <em>in one ear and out the other</em><em>.</em> This doesn't mean that something enters through one and exits through the other ear. Actually, this expression refers to an instance when someone ignores, dismisses, or forgets something almost immediately after being told. In this case, Dahl's antagonist keeps forgetting Billy's name instantly after hearing it.
What are the choices? If I had to choose a phrase without knowing of any choices, I would put "Bad studying" But im pretty sure thats not the answer you are looking for.
Second, if I was Jason I would still pray to god and never lose faith because God might send another "angel". Also, because life is short, you should move on with your normal life.
