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_____.