请认真阅读下面对话，并根据各题所给首字母的提示，写出一个英语单词的完整、正确形式，使对话通顺。 M=Mary T=Tom M:  Hi, I'm going door to door tonight to tell people about the Student Action Union. T:  I think I read something in the (76)n last week. M:  Yeah, we are trying to (77) p and preserve some of the open spaces on campus. T:  You are the group that's (78) a____against the extension of the parking lot next to Darwin Hall, right? M:  That's us. We just feel it is important to save some of the (79) n beauty of the campus. Some of those trees are hundreds of years old. T:  It's a pretty (80) p . My friends and I had picnics over there by the stream. M:  We are going to (81) o a demonstration on Thursday afternoon. T:  Well, I have a class on Thursday afternoon. M:　But maybe you could (82) s this appeal letter. We are going to hand it in to the administration to demonstrate how the students feel about this. T:  Sure, let me get a pen. M:  I have a pen right here. And let me (83) l you this little book about the Student Action Union. Maybe you could come to some of our meetings. We get (84) t once a month. T:  Yeah, I'd like to know more about your group. Let me know (85) w the next meeting is and I will try to be there.