填空题

There are a great many books, web sites, and training (36) today more or less dedicated to the idea that being bored is a major sin, for which the only (37) is to find ways to be busy and productive every waking moment. People who follow this (38) are constantly on-the-go—and feelings of boredom quickly smothered with yet more activities.
At work, at home, at play, each (39) must be filled with things to ward off the slightest possibility of being bored. As a society, we’re over-stimulated to the point of mania, like hyper-excited children in those few moments at a party before it all goes wrong and everyone starts crying. I suspect the rise in ADHD isn’t only (40) to eating strange chemicals in the diet; we’re training ourselves to require continual distraction, reducing our attention-span to less than a few seconds before we’re bored again.
It used to be only teenagers who (41) . "I’m so bored!" Now almost everyone acts as if not having something truly exciting to do every moment is either the first sign of senility or—much wore— positive proof that they, and their (42) are gone, past it, over the hill, on the way towards oblivion.
Yet boredom is, in reality, crucial to any ability to be truly productive, let (43) effective. If you’re flat-out busy and engaged all the time, you may feel important, but the reality is (44) . It’s those who are constantly (45) with activities that are most likely to be headed towards a nasty let-down.
A. alone B. careers C. course D. cure E. different
F. dissatisfied G. distracted H. due I. felt J. idea
K. moment L. sighed M. thanks N. time O. way