Before gap 1, the writer says that, after finishing the Harry Potter books, she decided to write her own stories about the characters. After the gap, she begins describing her experience as a teenage writer. The main topic is the writer’s decision to write fan fiction.
The surrounding text mainly uses the past simple, with some present simple in the general introduction. The pronouns include you, your, it and I. Key words are decided, write, own story and characters.
The sentence that fits gap 1 is: G — It was one of the best decisions I ever made in my life!