The answer to the question should be intimate
Answers: "You yourself should try to understand the lesson." and "Before running the marathon, Tom himself ate three plates of pasta."
Explanation: Intensive pronouns are often used to add emphasis to the subject of the sentence, so the answers would be the two sentences above. The reflexive pronouns include myself, yourself, himself, herself, themselves, etc.
Diligent. Diligent means hardworking and able to keep working on a single task over a long period of time.
One of the main themes Cushman chooses to use in this novel is freedom, though some may argue that it is obedience. This thought is not true, considering the fact that Catherine was never once obedient to her father. Cushman illustrates this theme using Catherine's birds.
Ir is the answer to your question.