71. to be careful! 一定要小心!
72. do me a favor 帮个忙,好吗?
73. help yourself. 别客气
74. i'm on a diet. 我在节食
75. keep in touch. 保持联络
76. time is money. 时间就是金钱
77. who's calling? 是哪一位?
78. you did right. 你做得对
79. you set me up! 你出卖我!
80. can i help you? 我能帮你吗?