A:Hello!May I speak to Tom, please
B:Speaking. [16]
A:This is Bill. I called you yesterday, but youwere not at home.
B:[17]I need to prepare something for my tripto Shanghai.
A:ShanghaiThat’s where the World Exposition(世博会)is being held. How lucky you are!
B:So I am. [18]
A:I, have a birthday party next Friday. Wouldyou like to come
B: [19]My plane will take off next Wednesday.
A:What a pity(遗憾)that you can’t come![20]
B:Thank you very much. Bye!
A:Bye!
A．Who’s that
B．I’d like to, but I’m afraid I can’t.
C．I’m buying something for my aunt.
D．Have a good trip!
E．I was shopping at that time.
F．Who are you
G．What did you call me for

师市低保政策规定，对法定劳动年龄段内且有劳动能力的居民，在计算低保金时应根据户主或申请人的年龄计算差额百分比。例：张三一家三口人，户主张三：男，38岁，失业无收入；妻子32岁，灵活就业月收入500元；儿子10岁，上小学。现申请最低生活保障，如何计算张三一家应享受的低保金？