If you're talking about the story "Marian Andersen Sings," then I believe it would be that "They knew that she would be nervous"
Possessive common nouns are common nouns or pronouns that own other nouns. Apostrophes are used to indicate this possession. Example: I will not hide the teacher's glasses.
The words are used to show quick, straight actions, they are scattered about so that the reader has the impression that the scene is impactful as the excerpt "I was struck by the intimacy scene." shows. There is also the idea that only the ones engaged in the conversations are allowed to hear their content and finally, these people are free from their masters -- teachers, parents and any other adult that symbolizes authority.
This is true.
This was one of the key concepts of the entire movement. According to them, there are three layers of imagination.