57. make an attempt at doing sth. (to do sth.) 试图做…　­

56. attach(to) (=to fix, fasten; join) 缚, 系 ,结　­

55. assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保证, 使…确信.　­

54. be ashamed of (=feel shame, guilt or sorrow because of sth. done) 以…　为羞耻　­

53. arrive on 到达; arrive at 到达某地(小地方);得出,作出; arrive in 到达某地(大地方);　­

52. arrange for sb.sth. to do sth. 安排…做…　­

51. arise from(=be caused by) 由…引起.　­

50. approve of (=consent to, be in favor of, favor, agree to, consider good, right) 赞成, approve vt. 批准　­

49. apply to 与…有关;适用　­

48. apply to sb. for sth. 为…向…申请 ; apply for申请; apply to 适用.　­