41.   The idea has taken off.

42.   The idea took over the magazines and became the mark of the chic.

43.   The idea took off, and clusters began to spring up at academic institutions and NASA research centers.

44.   The idea will never take hold for practical reasons, but even on an idealistic level, it lacks merit.

45.   The idea took form a few years back, as Lewis was traveling the country.

46.   The idea took off.

47.   The idea took root, and even the model of the day joined us, as she properly ought to join every group that tours the show.

48.   The referendum idea took hold when a group of Latino parents boycotted a Los Angeles elementary school to demand that their children be excused from ineffective bilingual classes.

49.   The small-world idea took root and flourished in popular culture.

50.   The speaker himself seemed startled when one idea -- thrown out with little preparation -- took off as quickly as a fire in a match factory.