20 The man who had once talked too much about his work with his families finally succeeded in his business because

57. With the development of modern industries, a lot of traditional values that developed from a farm-based economy have been enormously ( )?

56. Located in the heart of the city, the Dogs' Home is open seven days a week, 365 days a year to receive ( )dogs.

55. Much of the city was ( )before the storm but thousands remained, many of whom were trapped by the water for days.

54.The neighboring country suddenly concentrated a large number of soldiers and armaments on the border,ready for military actions. ( ) the pretext of holding training exercises.

53. Whenever I played hide-and-go-seek, it would ultimately end ( )me turning myself in.

52. Sports activities can offer challenge and excitement in the lives of patients who might otherwise become bored and tempted to revert ( ) bad habits.

51. The financial stress felt by students is strongly related ( )the fact that tuition fees are constantly rising,causing worries about the affordability of higher education.

50. The book is technical and detailed, but, if you are prepared to put effort ( ) understanding it, this book should interest you very much.

49. After graduating from college three years ago, he moved to New York City and established himself ( )a successful composer.

48.We should try our best to preserve our natural land so that future generations may also truly immerse themselves( )the experience of its natural beauty.