72. If you had (聽從了我的勸告，你就不會陷入麻煩）

答案：followed my advice, you would not be in trouble now.

73. With tears on her face, the lady (看著他受傷的兒子被送進(jìn)手術(shù)室）

答案：watched her injured son sent into the operation room.

74. After the terrorist attack, tourists (被勸告暫時不要去該國旅游）

答案：were advised not to travel to that country at the moment

75. I prefer to communicate with my customers (通過寫電子郵件而不是打電話）

答案：via E-mail instead of telephone

76. (直到截止日他才寄出）his application form.

答案：Until the deadline came, he didn't send out