The law of over－learning explains why cramming (突击学习) for an examination, though it may result in a passing grade, is not a ________ way to learn a school course.[ ]

Jenny is from a wealthy family and graduated from a famous university, but ______ she chose a job as a cleaner at the railway station.

Though he is _____ at home, but he doesn’t feel ______

You can’t complain about being left out ______you don’t make any effort to share your joys and sorrows with others

All over the world, people die of ________ every day.