从A---G选项中选出能填入空白处的最佳选项，补全对话（有

      从A---G选项中选出能填入空白处的最佳选项，补全对话（有两项多余）。

     （A man wants to buy a ticket at the station. M is for man. A is for assistant.）

     A: Good morning! Can I help you, sir?

     M:    81     Could you tell me the time of the last train to Beijing this evening?

     A: There’s one at 8:30. But I’m afraid all the tickets have been booked already.

     M:    82    

     A: The first train leaves at 9:15.

     M:    83   

     A: It arrives at 12:30. But may be a little late because of the bad weather.

     M: OK!   84 

     A: Eighty yuan and half of it for a child below 12.

     M:   85   I’d like two tickets and another one for a child at the age of ten, Here is the money.

     A: Thank you!

   81. B  82. F   83. D   84. A   85. E