Reading comprehension skills are essential for success in school and the workplace. Adjunct questions (AQ) have the potential to improve reading comprehension by directing the readers' attention to important information in a text. AQ can be integrated into digital environments where AI generates relevant prompts, analyzes responses, and adapts questions. Before integrating textual enhancements, design aspects and effects on comprehension need investigation. By reviewing eight L2 (second language) studies, this presentation offers recommendations for implementing AQ in both classroom and digital environments and provides examples of how to iterate the AI for prompt engineering.