1. 请把Betty与Tim之间的对话重新排列，使句意通顺。（写序号）

①Bye!      ②Hello, Bob.     ③Hello! 6503794.    ④OK. Thanks. Goodbye!   ⑤Oh, sorry! He's not at home.    

⑥Hi, Betty. This is Tim.   ⑦No, this is Betty.    ⑧Is Bob in? Betty.         ⑨Fine, thanks, Tim.      ⑩How are you?