52. arrange for sb.sth. to do sth. 安排…做…
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);
54. be ashamed of (=feel shame， guilt or sorrow because of sth. done) 以… 为羞耻
。 55. assure sb. of sth. (=try to cause to believe or trust in sth.) 向…保证， 使…确信。
56. attach(to) (=to fix， fasten; join) 缚， 系 ，结
57. make an attempt at doing sth. (to do sth.) 试图做…
58. attend to (=give one's attention， care and thought)注意，照顾;attend on(upon)(=wait upon， serve， look after) 侍候，照料
59. attitude to toward …对…的态度。看法
60. attribute…to…(=to believe sth. to be the result of…)把……归因于……， 认为……是……的结果 61. on the average (=on average， on an average) 平均