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Tom:
Andy told me to join his birthday party. 
安迪让我去参加他的生日会。
Bob:
That's good.
很好啊。
Tom:
But I'm afraid I have no time to go to the party.
但是我恐怕没时间去。
Bob:
Why?
为什么？
Tom:
My mum is sick. She needs me.
我妈妈生病了。她需要我。
Bob:
Oh,that's not good.
噢，真不巧。
Tom:
But Andy is my best friend.I'm at a loss as to what to do.
但是安迪是我最好的朋友。我真不知道怎么办才好。
Bob:
Make a phone call to him. He will understand you.
打电话给他吧。他会理解你的。
Tom:
OK. That's what I can do.
好。我只能这么做了。
Bob:
Go ahead.
去吧。