Final answer:
The blank in "Annie is ____ to get involved in the argument" can be filled with an adjective that describes her attitude, such as 'reluctant' or 'eager'. The context of her mixed emotions can influence the choice of the adjective.
Step-by-step explanation:
The sentence "Annie is ____ to get involved in the argument" requires an adjective to fill in the blank that describes Annie's disposition towards the argument. Given the context surrounding the phrase, various words could potentially fit, depending on the specific aspect of Annie's attitude one wishes to emphasize. One could say "Annie is reluctant to get involved in the argument" if she has reservations, or "Annie is eager to get involved in the argument" if she has a strong interest in participating. Examining the additional context provided "In her earnestness she stepped closer to him, repelled yet fascinated by the sudden transition of his moods. That he would fight for her was at once horrible and wonderful." it seems that Annie is experiencing conflicting emotions, which could potentially influence the choice of adjective used.