补全对话。 Susan: Hello. 1_____ Kate? Mike: Sorry. She isn't in right now. Is that Susan speaking? Susan: Yes. Who's that? Mike: This is Mike. 2_____? Susan: Fine, thanks. Can I leave a message? Mike: Of course, 3_____, please. I'll go and get a pen. (Soon Mike returns.) Mike: OK, please. Susan: I'd like to ask her if she will go to the English Festival next week. Will you please tell her to call me back when she returns? Mike: No problem. 4_____? Susan: It's 78340631. Mike: OK, bye-bye. Susan: Thanks. 5_____.