This document contains two passages with fill-in-the-blank questions requiring the correct form of words provided in brackets. The first passage asks for nouns to fill in gaps about darkness, responsibility, blindness, determination, magic, availability, ecology, and biology. The second passage asks for verbs to fill in gaps about popularizing, depending, hesitating, frosting, economizing, enjoying, threatening, ignoring, necessitating, and being sleepy. The document tests knowledge of correct grammatical forms to complete sentences.