根据对话内容，从方框中的七个选项中选出五项能填入空白处的最佳选项。
| A.But your report may not be the best. B.How great your idea is! C.It is a good topic. D.It’s said some factories pour waste water into the river near our city. E.Would you love to do it with me? F.What a pity! G.Well, our environment needs everyone’s effort. |
Anna: What is the topic of your project?
Alice: About pollution in our city.
Anna:
Alice: The pollution is rather serious.
Anna: It may pollute our water.
Alice: We should do a survey near the river and take action.
Anna:
Alice: I'll write my report and do something for it.
Anna: Sure! Let's work together.
Alice: The city is our home.It is our duty to make it clean and beautiful.
Anna:
A：Hello，Kangkang.I have just called you，but you weren't in.（1） ？
B：I have just been to a shopping center with Li Lei.I've never been there before，but I don't want to go there any more.
A：（2） ？
B：Because there were too many people.We got lost and couldn't find each other.
A：（3） !Have you found him yet？
B：No，he has probably gone home.Let's call him up now.I really hate to go to such a place.Let's go to the Ocean Park next time.
A：（4） .
a great time，we，what，had
!
games，there were，fun，lots of
.
sang，to，they，me，a birthday song
.
classmates，I，with，had a party，my
.