根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Mary: Hello! This is Mary. ___1___

John: Yes This is John. Hello, Mary!___2___

Mary: Fine, thank you . And you?

John: I'm fine, too. Thank you .What can I do for you , Mary?

Mary: ___3___

John: Yes. Why?

Mary: I'm going to have my birthday party at my house this evening. ___4___

John: I'd love to. What time shall I come?

Mary: ___5___

John: Five thirty is OK . See you then.

Mary: See you

A. Are you free tonight?

B. Is that John?

C. Who's speaking?

D. How are you?

E. What about half past five?

F. Would you like to come?

G. What would you like to do this evening?