study, student, hard, library, difficult, read, bored, depressed, stress, exam, author, school, woman, college, girl, sleeping, asleep, face, fatigue, many, education, down, concept, business, tired, university, female, books, depression, educate, educational, glasses, head, heap, idea, intelligent, issues, knowledge, learning, lesson, open, problem, session, shelves, studying, think, tiredness, weariness, work