从A—G选项中选出能填入空白处的最佳选项补全对话。(选择中有两项是多余的)

A: Hi, Mary. Have you heard of the volunteer activity this week in our school?

B:

A: Ah, don't you know? It is "Empty Plates Movement". And I'm one of the volunteers.

B:

A: Sure. We will put up signs about saving food in our school dining hall at first.

B: Oh, sounds interesting!

A: We have lots of things to do.

B: Wonderful! When will it start?

A: At 3:00 tomorrow afternoon.

B: Yes, I'd love to. See you tomorrow.

A: See you.

A. May I have a chance to join you? B. Would you like to join us? C. No, I haven't. D. We will tell students to save food. E. Yes, I have. F. What else will you do? G. Can you tell me something about the activity?