《合同法》中对于要约的性质及其构成要件作出了明确的规定，主要从( )等方面理解。
题型：多项选择题
问题：
《合同法》中对于要约的性质及其构成要件作出了明确的规定，主要从( )等方面理解。
A．要约是由特定人作出的意思表示
B．要约的目的是获得相对人的承诺
C．要约的内容应当具体确定
D．要约可以撤回和撤销
E．要约必须具有订立合同的意图
题型：多项选择题
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.