******参观《复兴之路》展览时深情提出了“中国梦”，他以为实现中华民族伟大复兴，就是中华民族近代以来最伟大的梦想，凝聚了几代中国人的夙愿，体现了中华民族和中国人民的整体利益，是每一个中华儿女的共同期盼。每个人的前途命运都与国家和民族的前途命运紧密相连，他号召一代又一代中国人共同为实现民族复兴的“中国梦”而努力。

已知等比数列$\left\{a_n\right\}$的前n项和为$S_n$,则下列一定成立的是(      )

补全对话。每空一词。

Dave: Hi, Mona! I am going to have a birthday ____. I want to have it on Saturday evening. Can you come?

Mona: Oh, I am going to  ____ my grandfather on Saturday evening.

Dave: What about Sunday?

Mona: I have to take the piano lessons.

Dave: Oh! When are you ____ then?

Mona: Well, Friday is fine.

Dave: Friday? That’s tomorrow! OK. We can have it then. Can you ask Ali to ____    us?

Mona: Sure. When and where shall we meet?

Dave: Near our school gate at half ____ four.

Mona: Great! See you then!

Dave: Bye!