72. If you had ________ (听从了我的忠告,你就不会陷入麻烦).
73. With tears on her face, the lady ________ (看着她受伤的儿子被送进手术室).
74. After the terrorist attack, tourists ________ (被劝告暂时不要去该国旅游).
75. I prefer to communicate with my customers ________ (通过写电子邮件而不是打电话).
76. ________ (直到截止日他才寄出) his application form.